Ehrlich, Paul R. <br/><br/>
The butterflies / 
by Paul R. Ehrlich and Anne H. Ehrling. 
 - United States of America :  Brown,  1961. 
 - The pictured-key nature series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Entomología<br/>Lepidoptera
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Texto