Sommer Robert <br/><br/>
Practical guide to behavioral research: Tools and techniques 

 - 2 
 - New York, USA  Oxford University Press  1986 
 - viii,297p. 
<br/><br/><label>ISBN: </label>0-19-503977-7 
<br/><br/><label>Source: </label>Books to be hide in OPAC 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Behavioral Research