Pearl, Raymond, 1879-1940.  Pearl, Raymond, 1879-1940. <br/><br/>
The natural history of population / 
by Raymond Pearl. 
 - London :  Oxford University press : H. Milford,  Oxford University press : H. Milford,  1939. 
 - University of London. Heath Clark lectures, l937 .
<br/><br/> At head of title: University of London. Health Clark lectures 1937 delivered at the London School of Hygiene and Tropical Medicine. 
<br/><br/>Bibliography: p. [356]-398. 
<br/><br/><label>LCCN: </label>39005605 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population.<br/>Fertility.<br/>Birth control.<br/>Contraception<br/>Family Planning<br/>Population Growth
<br/><br/><label>LC Class. No.: </label>HB871  / .P37 1939