Dorit, Robert L. Zoology [Book] / Robert L. Dorit, Warren F. Walker, Jr., Robert D. Barnes. - Philadelphia : Saunders College Pub., c1991. - xxv, 1009, [53] p., [6] leaves of plates : ill. (some col.) ; 28 cm. All. ISBN: 0030305047 Subjects--Topical Terms: Zoology. Dewey Class. No.: 590