Hardin, Garrett. <br/><br/>
Population evolution and birth control :  a collage of contraversial ideas / 
Garrett Hardin. 
 - 2nd ed. 
 - San Francisco :  W. H. Freeman,  1964. 
 - xvi, 386 p. ;  23 cm. 
<br/><br/>Includes index and bibliographical references. 
<br/><br/> Open access. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birth control.<br/>Contraception.