Ragin, Charles C., <br/><br/>
Constructing social research :  The unity and diversity of method / 
Charles c. ragin 
 - 194 páginas 
 - Sociology for a new century .
<br/><br/><label>ISBN: </label>0-8039-9021-9  (rustica : papel alcalino) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ciencias sociales--Investigación
<br/><br/><label>LC Class. No.: </label>H62  / R34