Milne, Lorus Johnson,  1912- <br/><br/>
The balance of nature / 
Lorus J. Milne & Margery Milne ; illus. by Olaus J. Murie 
 - New York :  Alfred A. Knopf,  1969 
 - 329 p. :  ill. ;  17 cm. 
<br/><br/>p. 307-329 
<br/><br/><label>LCCN: </label>60-013433 /L/r892 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal ecology<br/>Animal populations