Hanson, Earl D. Animal diversity / Earl D. Hanson. - New Delhi : Prentice-Hall of India, 1963 - xii, 116p. : fig. ; 23x15 cm. - (Foundations of modern biology series / edited by William D. McElroy and Carl P. Swanson) . Includes index. ISBN: : Rs. 2.10 Subjects--Topical Terms: ZOOLOGY-EMBRYOLOGY Dewey Class. No.: 591.33 / HAN-ANI