Peterson, Roger Tory. <br/><br/>
A field guide to wildflowers :  Northeastern and North-Central North America / 
 Wildflowers 
[by] Roger Tory Peterson and Margaret McKenny ; ill. by Roger Tory Peterson. 
 - Boston, MA :  Houghton,  1968. 
 - xxviii, 420 p. :  ill. (some col.), map ;  19 cm. 
 - The Peterson field guide series ;  17 .
<br/><br/> Includes index. 
<br/><br/> A reference guide to over 1,200 species of wild flowers found in Northeastern United States and Southern Canada. 
<br/><br/><label>ISBN: </label>039508086X 0395183251 (pbk.) 
<br/><br/><label>LCCN: </label>67013042 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wild flowers--Pictorial works.<br/>Wild flowers--Identification.<br/>Flowers--Pictorial works.--North America<br/>Flowers--Identification.--North America
<br/><br/><label>Dewey Class. No.: </label>582.13