Beer, SIr Gavin De Vertebrate Zoology. : An Introduction To The Comparative Anatomy Embryology And Evolution Of Chordate Animals / By Sir Gavin De Beer . - 8th ED. Rep. - London: Sidgwick & Jackson, 1966. - 435p.: 20cm. INdex. Subjects--Index Terms: Chordates, Zoology Dewey Class. No.: 596