Verma, P.S. A manual of practical Zoology :invertebrates P.S. Verma - 15th rev. and enl. - New Delhi S.Chand 2013;2021 - x, 497 ISBN: 8121908299 Subjects--Topical Terms: Invertebrates-laboratory manuals Dewey Class. No.: 592.078 / VER P13;P21