Geografía censal de Puerto Rico :  1990 / 
Norma Burgos, Luz H. Olmeda, Lillian Torres Aguirre. 
 - San Juan, P. R. :  La Junta ,  1990. 
 - v.  ill.  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Housing--Puerto Rico.<br/>Census districts--Puerto Rico.<br/>Population geography--Puerto Rico.<br/>Metropolitan areas--Census.--Puerto Rico
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Census--1980.<br/>Puerto Rico--Population.