R. H. Major, ed. (1857), "The travels of Niccolo Conti", India in the Fifteenth Century, Hakluyt Society, p. 27
versus Needham, Science and Civilisation in China, p. 452
R. H. Major, ed. (1857), "The travels of Niccolo Conti", India in the Fifteenth Century, Hakluyt Society, p. 27
versus Needham, Science and Civilisation in China, p. 452