Darling, Daniel H. <br/><br/>
Manufacturing occupations in Puerto Rico 
Daniel H. Darling and Robert S Ray. 
 - [Río Piedras, P.R.]  University of Puerto Rico Press  1954. 
 - ix, 71 p.  ill., charts, tables. 
<br/><br/> At head of title : A Social Science Research Center study. College of Social Sciences. University of Puerto Rico. 
<br/><br/>Includes bibliographical footnotes. 
<br/><br/><label>LCCN: </label>fel36001703  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Puerto Rico--Occupations.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico