Foster,Steven. <br/><br/>
A field guide to medicinal plants :  eastern and central North America/ 
text by Steven Foster and James A. Duke ; line drawings by Roger Tory Peterson, Jim Rose, and Lee Allen Peterson ; photo-graphs by Steven Foster. 
 - Boston ; New York :  Houghton Mifflin Company,  c1990. 
 - xii, 366 p. 48 p. of plates :  ill. (some col.) ;  21 cm. 
 - The peterson field guide series ;  40 .
<br/><br/> "Sponsored by the National Audubon Society, the National Wild life Federation, and the Roger Tory Peterson Institute." 
<br/><br/>Includes bibliographical refereneces. 
<br/><br/><label>ISBN: </label>0395353092 0395467225 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medicinal plants--Identification.--East (U.S.)<br/>Medicinal plants--Identification.--Middle West<br/>Medicinal plants--Identification.--Canada, Eastern
<br/><br/><label>LC Class. No.: </label>QK99.U6  / F68 1990