Parihar, N. S. Economic Botany / by B.P. PANDEY. - 1st ed. - Allahabad, S.Chand ; c1978. - vi;,331 p. : ill. ; 23 cm. Includes index ISBN: 9788121903417 8121903416 Subjects--Topical Terms: Bryophytes.Pteridophyta. Dewey Class. No.: 581.6 / PAE