peridophyta (vascular cryptogams) Vashishta, P.C. A.K Sinha (Revised by) Anil Kumar (Revised by) creator text New Delhi S.Chand & Company LTD. 2008 monographic xii, 628 p. : ill., Col. ; 24 cm . Includes bibliographical references and index. Botany vascular cryptogams Hymenophyllaceae Peridophyta Lycophyta RCRS FRAHS 587 VAS 8121927854 (pbk) 9788121927857 (pbk)