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English: "Twelfth-century Byzantine manuscript the oath was written out in the form of a cross, relating it visually to Christian ideas".
Date 12th century
Source page 27 of Surgery: An Illustrated History by Ira M. Rutkow, M.D. published in 1993: ISBN 0801660785.
Author manuscript:Unknown

scan used in book: Foto Biblioteca Vaticana

scan from book: User:Rmrfstar


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