SOMMER, Barbara <br/><br/>
A practical Guide to Behavioral Research:  Tools and Techniques/ 
Barbara Sommer 
 - 4th Edition 
 - Oxford University Press  New York  c1980 
 - xvi,376p.; 
<br/><br/> Includes Indexes 
<br/><br/><label>ISBN: </label>0195104196 
<br/><br/><label>Dewey Class. No.: </label>150.72