Foster, Steven <br/><br/>
Desk reference to nature's medicine / 
Steven Foster and Rebecca L. Johnson 
 -  Washington, D.C. :  National Geographic Society,  c2006 
 - 416 p. :  ill. (some col.) ;  25 cm. 
<br/><br/> At head of title : National Geographic 
<br/><br/>Includes bibliographical references (p. 414) and index 
<br/><br/><label>ISBN: </label>1426202938 9781426202933 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Materia medica, Vegetable<br/>Materia medica, Vegetable--History<br/>Pharmacognosy<br/>Pharmacognosy--History<br/>Medicinal plants<br/>Medicinal plants--History<br/>Naturopathy<br/>Naturopathy--History<br/>Alternative medicine<br/>Alternative medicine--History