Wingfield, Roland. <br/><br/>
Life styles of Puerto Rico's youth / 
Roland Wingfield. 
 - Río Piedras, P.R. :  Centro de Investigaciones Sociales, Universidad de Puerto Rico ,  1977. 
 - 85 p.  front. 
<br/><br/> Vita. 
<br/><br/>"References": p. 69. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Youth--Puerto Rico.<br/>Drug abuse--Puerto Rico.<br/>Youth--Conduct of life.