July 01, 2010 10:35AM
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Registered: 16 years ago
Posts: 756
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Byrd wrote:
Aren't you using the "Barone cubit" which you invented rather than one of the known cubit sticks for your measure?
<[
www.ronaldbirdsall.com];
Petrie wrote:
If a strictly weighted [p. 179] mean be taken it yields 20.620 ± .004; but taking the King's Chamber alone, as being the best datum by far, it nevertheless contracts upwards, so that it is hardly justifiable to adopt a larger result than 20.620 ± .005.
Furthermore: All of the known cubit rods are not from the 4th Dynasty, but date from Second intermediate period and later.
[
www.egyptorigins.org]
From the survey I conclude that extant evidence is insufficient to properly assess the history of cubit measurements in ancient Egypt. All available examples are from later periods and, among them, show degradation from rigorous standards. However, the evidence is informative about measurement practices in the periods post 1500 BC.
Also:[
www.africahistory.net]
There was also a zero reference level marked on construction lines used as early as 2700 BCE. These lines, still visible at Old Kingdom pyramids and tombs, show the beginning of metricizing space, using concepts that do not appear in the mathematical papyri. These subjects are discussed in my article, B. Lumpkin. "Mathematics Used in Egyptian Construction and Bookkeeping," in The Mathematical Intelligencer, vol. 24, no. 2, 2002, 20-25.
Lumpkin, Beatrice: Mathematics used in Egyptian Construction and Bookkeeping, The Mathematical Intelligencer, New York, 2002, Vol. 24 No. 2, 20-25
Presents
"examples from ancient construction and bookkeeping practices [which] indicate that the development of relatively modern concepts, such as recognition of zero as a quantity and the metricizing of space, has a long history, going back at least 4,700 years in ancient Egyptian mathematics. The examples include a bookkeeping balance sheet with many columns containing zero remainders and numbered construction lines at pyramids and mastabas. The same symbol, nfr, was used for the zero remainders and the zero reference point on the construction guidelines. A third example was a very interesting architect's diagram that gave vertical coordinates for points located on a curve. The horizontal spacing of the points appears to be one cubit apart."
I believe Don covered that last item here:[
www.hallofmaat.com]
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Don Barone |
April 24, 2010 06:41AM |
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Don Barone |
April 25, 2010 08:21PM |
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Hermione |
April 26, 2010 06:30AM |
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Don Barone |
April 26, 2010 07:34AM |
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Sirfiroth |
April 26, 2010 08:01AM |
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Don Barone |
April 26, 2010 09:56AM |
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Don Barone |
April 26, 2010 10:26AM |
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Sirfiroth |
April 26, 2010 05:00PM |
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Don Barone |
April 28, 2010 08:54PM |
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Warwick L Nixon |
April 26, 2010 10:28AM |
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Don Barone |
April 26, 2010 10:40AM |
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Warwick L Nixon |
April 26, 2010 11:43AM |
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Don Barone |
April 26, 2010 12:30PM |
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Warwick L Nixon |
April 26, 2010 01:16PM |
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Don Barone |
April 26, 2010 10:07PM |
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Don Barone |
April 28, 2010 11:11PM |
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Don Barone |
April 29, 2010 12:53AM |
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Don Barone |
April 29, 2010 07:59AM |
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Hermione |
April 29, 2010 08:51AM |
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Warwick L Nixon |
April 29, 2010 09:41AM |
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Don Barone |
April 29, 2010 10:09AM |
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Warwick L Nixon |
April 29, 2010 11:27AM |
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Jammer |
April 28, 2010 07:33AM |
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Khazar-khum |
April 29, 2010 04:57PM |
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Don Barone |
April 29, 2010 05:28PM |
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Khazar-khum |
April 30, 2010 03:00PM |
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Anthony |
May 09, 2010 07:46AM |
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Don Barone |
May 09, 2010 08:37AM |
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Hermione |
May 09, 2010 01:43PM |
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Don Barone |
April 30, 2010 09:45AM |
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Anthony |
May 09, 2010 07:50AM |
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Don Barone |
May 09, 2010 08:42AM |
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Anthony |
May 09, 2010 04:45PM |
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Don Barone |
May 09, 2010 09:29AM |
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Hermione |
May 09, 2010 01:39PM |
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Don Barone |
April 30, 2010 02:33PM |
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Don Barone |
April 30, 2010 02:57PM |
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IanM |
April 30, 2010 03:29PM |
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Don Barone |
April 30, 2010 05:12PM |
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Don Barone |
April 30, 2010 10:07PM |
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Don Barone |
May 03, 2010 09:21AM |
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Khazar-khum |
June 22, 2010 06:30AM |
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Don Barone |
May 05, 2010 09:03AM |
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Hermione |
May 05, 2010 09:19AM |
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Don Barone |
May 05, 2010 09:38AM |
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Pete Clarke |
May 05, 2010 10:04AM |
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Warwick L Nixon |
May 05, 2010 09:42AM |
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lobo-hotei |
May 05, 2010 10:02AM |
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Hermione |
May 05, 2010 10:40AM |
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Warwick L Nixon |
May 05, 2010 11:15AM |
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Don Barone |
May 06, 2010 03:45PM |
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Warwick L Nixon |
May 06, 2010 06:28PM |
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lobo-hotei |
May 07, 2010 12:46AM |
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Don Barone |
May 07, 2010 06:00AM |
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lobo-hotei |
May 07, 2010 08:35AM |
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Don Barone |
May 07, 2010 10:24AM |
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lobo-hotei |
May 07, 2010 11:21AM |
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Warwick L Nixon |
May 07, 2010 09:40AM |
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Don Barone |
May 07, 2010 10:45AM |
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lobo-hotei |
May 07, 2010 11:24AM |
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Warwick L Nixon |
May 07, 2010 11:36AM |
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Jammer |
May 07, 2010 12:49PM |
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Don Barone |
May 07, 2010 02:40PM |
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Warwick L Nixon |
May 07, 2010 03:16PM |
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Don Barone |
May 07, 2010 03:59PM |
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Warwick L Nixon |
May 07, 2010 04:08PM |
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sansahansan |
June 21, 2010 01:39PM |
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Don Barone |
June 21, 2010 09:58PM |
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sansahansan |
June 22, 2010 07:54AM |
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Don Barone |
June 22, 2010 08:44AM |
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sansahansan |
June 22, 2010 11:39AM |
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Rick Baudé |
June 22, 2010 02:05PM |
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sansahansan |
June 22, 2010 02:33PM |
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sansahansan |
June 22, 2010 03:46PM |
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Hermione |
June 23, 2010 02:48PM |
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Don Barone |
June 23, 2010 09:02AM |
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Don Barone |
June 23, 2010 09:35AM |
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Don Barone |
June 25, 2010 03:19PM |
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Khazar-khum |
June 25, 2010 07:54PM |
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Don Barone |
June 25, 2010 08:38PM |
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Khazar-khum |
June 26, 2010 01:22AM |
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Anthony |
June 26, 2010 05:29AM |
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Don Barone |
June 26, 2010 05:53AM |
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Anthony |
June 26, 2010 08:38AM |
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Don Barone |
June 26, 2010 03:48PM |
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Khazar-khum |
June 26, 2010 07:39PM |
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Jammer |
June 28, 2010 11:48AM |
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Don Barone |
June 28, 2010 12:02PM |
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Jammer |
June 28, 2010 12:19PM |
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Don Barone |
June 28, 2010 12:32PM |
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Khazar-khum |
June 22, 2010 06:14AM |
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Khazar-khum |
June 26, 2010 07:40PM |
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Don Barone |
June 27, 2010 06:31PM |
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Jammer |
May 06, 2010 11:08AM |
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Don Barone |
June 21, 2010 11:06AM |
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Hermione |
June 21, 2010 11:19AM |
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Don Barone |
June 30, 2010 08:58AM |
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lobo-hotei |
June 30, 2010 11:32AM |
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Khazar-khum |
June 30, 2010 07:31PM |
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Don Barone |
June 30, 2010 08:13PM |
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Byrd |
July 01, 2010 09:43AM |
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Don Barone |
July 01, 2010 09:51AM |
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Jammer |
July 01, 2010 01:19PM |
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Byrd |
July 06, 2010 07:50AM |
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Sirfiroth |
July 01, 2010 10:35AM |
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Jammer |
July 01, 2010 01:16PM |
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Sirfiroth |
July 01, 2010 03:34PM |
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Don Barone |
July 01, 2010 04:06PM |
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Khazar-khum |
July 01, 2010 04:08PM |
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Don Barone |
July 01, 2010 04:33PM |
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Jammer |
July 02, 2010 11:37AM |
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Jammer |
July 02, 2010 11:13AM |
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Don Barone |
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Khazar-khum |
July 05, 2010 03:26PM |
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Greg Reeder |
July 05, 2010 05:14PM |
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Khazar-khum |
July 05, 2010 06:02PM |
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Greg Reeder |
July 05, 2010 06:06PM |
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Khazar-khum |
July 05, 2010 08:36PM |
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Greg Reeder |
July 05, 2010 09:37PM |
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Rick Baudé |
July 06, 2010 08:22AM |
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Khazar-khum |
July 06, 2010 06:08PM |
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Rick Baudé |
July 06, 2010 07:02PM |
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Rick Baudé |
July 06, 2010 10:39PM |
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Khazar-khum |
July 07, 2010 04:53PM |
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Rick Baudé |
July 07, 2010 05:49PM |
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Greg Reeder |
July 07, 2010 08:29PM |
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Rick Baudé |
July 07, 2010 08:40PM |
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Hermione |
July 08, 2010 03:29AM |
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Don Barone |
July 05, 2010 10:09PM |
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Jammer |
July 06, 2010 09:58AM |
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Khazar-khum |
July 06, 2010 04:21PM |
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Don Barone |
July 06, 2010 09:39PM |
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Jammer |
July 07, 2010 07:28AM |
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Don Barone |
July 07, 2010 08:08AM |
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Jammer |
July 07, 2010 01:33PM |
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Don Barone |
July 12, 2010 09:55AM |
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Khazar-khum |
July 12, 2010 07:39PM |
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Don Barone |
July 12, 2010 10:51PM |
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Jammer |
July 13, 2010 11:21AM |
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Khazar-khum |
July 13, 2010 02:44PM |
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Don Barone |
July 13, 2010 09:26PM |
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Khazar-khum |
July 13, 2010 11:12PM |
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Don Barone |
July 14, 2010 07:08AM |
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Jammer |
July 14, 2010 09:37AM |
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Don Barone |
July 14, 2010 09:41AM |
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Jammer |
July 16, 2010 06:03AM |
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Don Barone |
July 16, 2010 06:13AM |
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Jammer |
July 16, 2010 10:44AM |
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lobo-hotei |
July 13, 2010 10:05PM |
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Don Barone |
July 15, 2010 12:55AM |
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Don Barone |
July 30, 2010 09:36PM |
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Hermione |
July 31, 2010 03:01AM |
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Don Barone |
July 31, 2010 06:23AM |
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Anthony |
July 31, 2010 09:32AM |
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Hermione |
July 31, 2010 11:02AM |