@book{ BB03653307, author = "Gunther, R. T. (Robert Theodore)", title = "The astrolabes of the world : based upon the series of instruments in the Lewis Evans Collection in the old Ashmolean Museum at Oxford, with notes on astrolabes in the collections of the British Museum, Science Museum, Sir J. Findlay, Mr. S.V. Hoffman, the Mensing Collection, and in other public and private collections", publisher = "Holland Press", year = "1976", URL = "https://ci.nii.ac.jp/ncid/BB03653307" }