Samuelsson, Gunnar <br/><br/>
Drugs of natural origin :  A textbook of pharmacognosy / 
G. Samuelsson. 
 - 4th revised edition 
 - Stockholm :  Apotekarsocieteten,  1999. 
 - 551 p. 
<br/><br/><label>ISBN: </label>918627-481-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pharmacognosy