classical Greeks circumference of the Earth http://en.wikipedia.org/wiki/History_of_geodesy https://en.wikipedia.org/wiki/History_of_geodesy how that was measured https://en.wikipedia.org/wiki/History_of_geodesy calculation of the size of the Earth article on this en.wikipedia.org/wiki/History_of_geodesy article on this https://en.wikipedia.org/wiki/History_of_geodesy English article on this History of Geodesy https://en.wikipedia.org/wiki/History_of_geodesy two major errors http://en.wikipedia.org/wiki/History_of_geodesy History of Geodesy (in Wikipedia) en:History of geodesy http://en.wikipedia.org/wiki/History_of_geodesy History of geodesy - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/History_of_geodesy http://en.wikipedia.org/wiki/History_of_geodesy http://en.wikipedia.org/wiki/History_of_geodesy two major errors article on this article on this two major errors https://en.wikipedia.org/wiki/History_of_geodesy en:History of geodesy https://en.wikipedia.org/wiki/History_of_geodesy calculation of the size of the Earth two major errors วิธีของเอราทอสเทนีส, วิกิพีเดียอังกฤษ circumference of the earth calculation of the size of the Earth History of Geodesy (in Wikipedia) calculation of the size of the Earth calculation of the size of the Earth calculation of the size of the Earth calculated its diameter https://en.wikipedia.org/wiki/History_of_geodesy two major errors History of Geodesy circumference of the earth circumference of the earth two major errors calculation of the size of the Earth calculation of the size of the Earth en.wikipedia.org/wiki/History_of_geodesy calculation of the size of the Earth circumference of the earth calculated its diameter article on this article on this