Hatt, Paul K. <br/><br/>
Backgrounds of human fertility in Puerto Rico : a sociological survey / Paul K. Hatt 

 - Princeton,  Princeton University Press  1952. 
 - xxiv, 512 p.  tables. 
<br/><br/> "Prepared under the joint auspices of the Social Science Research Center of the University of Puerto Rico and the Office of Population Research of Princeton University." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertility
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Statistics, Vital.