KERLINGER Fred N <br/><br/>
Foundations of behavioral research 

 - 2nd 
 - Delhi  Surjeet Publications           1964 
 - xix, 741p  cm. 
<br/><br/> Appendix: p 690-710 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social Science