Macy, Ralph W. <br/><br/>
Butterflies, a handbook of the butterflies of the United States, complet for the region north of the Potomac and Ohio rivers and east of the Dakotas 

 - Minneapolis :  University of Minnesota,  1941 
 - 247 p.  : ilus 
<br/><br/><label>LCCN: </label>29273 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mariposas.
<br/><br/><label>Dewey Class. No.: </label>595.789  / M32