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Old 14-12-2018, 07:43 PM
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Eratosthenes (Peter)
Trivial High Priest

Eratosthenes is offline
 
Join Date: Apr 2015
Location: Melbourne, Australia
Posts: 392
Could try one of these two sources?

http://www.castor2.ca/04_Propagation...uat/index.html
https://en.wikipedia.org/wiki/Spheri...an_coordinates
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