Pearl, Raymond,    1879- <br/><br/>
The natural history of population /    
by Raymond Pearl. 
 - London :    London :   London :   Oxford University Press ;    H. Milford,   H. Milford,   1939. 
 - xii, 416p. incl. tables, diagrs., forms ;    22cm. 
 - University of London. Heath Clark lectures, 1937, delivered at the L ondon school of hygiene and tropical medicine.   .
<br/><br/>Includes bibliographical references (p. 356-398) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population--------<br/>Fecundity--------<br/>Birth control--------