Evans, William Charles Trease and Evans pharmacognosy / William Charles Evans - 15th ed. - New Delhi : WB Saunders, c2002. - viii, 585 p. : ill. ; 29 cm. ISBN: 8131200876 LCCN: Subjects--Topical Terms: Pharmacognosy LC Class. No.: RS160 / .T75 2002 Dewey Class. No.: 615.321 / E92t