United  States census of population  1950.  Specail reports - Puerto Ricans in the continent United States 

 - Washington  Govt. Print. Off  1953 
 - iv, 18p  tables  29 cm 
<br/><br/> One of a series of reports (Series P-E bulletins) which comprise Vol. 4, specail reports 
<br/><br/><label>Dewey Class. No.: </label>Pam 312.9  / Uni