Research in social work  Primer, A 
GRINNELL, Richard M 
 - Itasca  F.E Peacock Publishers  1990 
 - 321 p. 
<br/><br/><label>ISBN: </label>0087513372 
<br/><br/><label>Subjects--Index Terms: </label>Social work research;  Research-Social Work;  Data Collection;  Sampling;  validity 
<br/><br/><label>Dewey Class. No.: </label>361.0072