Bickman, Leonard <br/><br/>
Handbook of Applied Social Research Methods 
Leonard Bickman and Debra J. Rog 
 - New Delhi  Sage Publications  1998 
 - ix,572p. 
<br/><br/><label>ISBN: </label>076190672X 
<br/><br/><label>LC Class. No.: </label>H 62  / .H245 1997