Milne, Lorus Johnson,  1912- <br/><br/>
The balance of nature 
[by] Lorus J. Milne & Margery Milne. Illus. by Olaus J. Murie 
 - [1st ed.] 
 - New York  Knopf  1960 
 - 329 p  illus  17 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal ecology<br/>Animal populations
<br/><br/><label>Dewey Class. No.: </label>591.5