Lal, S. S. (A) Text book of practical zoology invertebrate / S. S. Lal. - 7th rev. ed. - Meerut : Rastogi, 2000 - xi, 367p. : ill. ; 25x19 cm. ISBN: 81-7133-488-1 : Rs. 135.00 Subjects--Topical Terms: INVERTEBRATES Dewey Class. No.: 592 / LAL-INV