Verma, P. S. Manual of practical Zoology. Invertebrate / P. S. Verma - 1st ed. - New Delhi : S. Chand & Comp, 1971 [ Reprint 1995 ]. - xii, 647 p. : ill. ; 21 cm. ISBN: 8121908299 Subjects--Topical Terms: Invertebrates. Dewey Class. No.: 592 / VEM 1995