Population change :  a case study of Puerto Rico / 
prepared by Sociological Resources for the Social Studies;Sponsored by the American Sociological Association; supported by the National Science Foundation. 
 - Belmont, California : Allyn and Bacon, Inc. :  1974. 
 - 54 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population--Social Aspects--Puerto rico.<br/>Social change--Puerto Rico.