Tilden, James <br/><br/>
Western butterflies 

 - Norwalk, CT  Easton Press  1986 
 - 370 p. 
<br/><br/> D., 4/04 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Butterflies--Western United States--Identification.<br/>Insects--Identification.<br/>Insects--Western United States--Identification.