Social change and public policy  a seminar at the University of Puerto Rico, 20-24 February, 1967. 
[Edited by] Millard Hansen. 
 - Río Piedras, P.R.  Social Science Research Center  1968. 
 - 330 p. 
<br/><br/> Collection of works by various authors. 
<br/><br/>Includes bibliographical footnotes. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social change
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Social conditions.