Pharmacognosy; the study of natural drug substances and certain allied products
By: [by] Robertson Pratt and Heber W. Youngken.
Contributors: Youngken, Heber Wilkinson, 1913-
Edition: 2d ed.
Publisher: Lippincott
Published: 1956
Place of publication: Philadelphia
Language: eng
Number of pages: 694
Subjects: Pharmacognosy.