Whyte, Lancelot Law,  1896-1972. <br/><br/>
Internal factors in evolution / 
Lancelot Law Whyte. 
 - New York :  George Braziller,  1965. 
 - 128 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references (p. 115-117) and index. 
<br/><br/><label>LCCN: </label>65-012887 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evolution.<br/>Variation (Biology).