Wallis, T. E. Textbook of pharmacognosy / T. E. Wallis - 5th ed. - New Delhi : c1985. - xi, 652 p. : ill., tabs. ; i, 652 p. illus., tables, diagrs. 22 cm. ISBN: LCCN: Subjects--Topical Terms: Pharmacognosy LC Class. No.: RS160 / .W24 1985 Dewey Class. No.: 615.321 / W214t