Opler, Paul A. <br/><br/>
A field guide to Eastern butterflies  / 
by Paul A. Opler 
 - Boston  :   Mifflin 
 - 396 p. 
 - The petenos field guides series; 4 .
<br/><br/><label>LCCN: </label>204568 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mariposa
<br/><br/><label>Dewey Class. No.: </label>PA 595.78 P3