Torres Degro, Arnaldo. <br/><br/>
Estadistica descriptiva en el campo social puertorriqueño 2005 / 
Arnaldo Torres Degró, Evelyn Afanador Mejías. 
 - 1a ed. 
 - Mayagüez, PR :  Arnaldo Torres Degro ,  2005. 
 - vii, 222 p :  ill. ;  28 cm. 
<br/><br/>Includes bibliographical references (p. [221]-222) and index. 
<br/><br/><label>ISBN: </label>0965005739  64.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics--Problems, exercises, etc.<br/>Social sciences--Research.