Roger Tory Peterson <br/><br/>
A Field Guide to Wildflowers of ... North America 

 -  Houghton Mifflin Company 
 - 480 pages 
<br/><br/> 1968 Houghton Mifflin trade paperback, 20th printing. ISBN:0395183251. Roger Tory Peterson, Margaret McKenny. <br/>A guide to wild flowers in the Northern United States 
<br/><br/><label>ISBN: </label>9780395183250 
<br/><br/><label>Standard No.: </label>42035193 
<br/><br/><label>LCCN: </label>67013042 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants
<br/><br/><label>LC Class. No.: </label>QK118 
<br/><br/><label>Dewey Class. No.: </label>582.13097