Samuelsson, Gunnar. <br/><br/>
Drugs of natural origin :  a treatise of pharmacognosy / 
Gunnar Samuelsson. 
 - 6th revised ed. 
 - Stockholm :  Apotekarsocieteten,  2009 
 - 776 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>9789197651059  RM446.74 9781439838570 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pharmacognosy