Emlen, John Merritt <br/><br/>
Ecology :  an evolutionary approach / 
J. Merritt Emlen 
 - Reading, Mass. :  Addison-Wesley,  1973 
 - xiv, 493 p. :  ill. ;  24 cm. 
 - Addison-Wesley series in the life sciences .
<br/><br/><label>ISBN: </label>0201018942 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology