Sengar, N. P. S. A textbook of pharmacognosy / N. P. S. Sengar, Ritesh Agrawal, Ashwini Singh. - Hyderabad : PharmaMed Press, c2009 - xii, 244 p. : ill. ; 25 cm. ISBN: 9788188449811 (pbk.) 9788188449814 (pbk.) Subjects--Topical Terms: Pharmacognosy Dewey Class. No.: 615.321 / SEN 2012