TY - BOOK AU - Evans, William Charles, TI - Trease and Evans' pharmacognosy SN - 9780702029349 AV - RS160 .E93 2009 PY - 2009/// CY - Edinburgh PB - Elsevier KW - Pharmacognosy KW - Medicinal plants KW - Drugs, Natural N1 - Includes bibliographical references and index ER -