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Dyfyniad Arddull ChicagoS Eddy. Atlas of Drawings for Vertebrate Anatomy. New York: John Wiley, 1967.
Dyfyniad MLAS Eddy. Atlas of Drawings for Vertebrate Anatomy. New York: John Wiley, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.