Backstorm, Charles Herbert. <br/><br/>
Survey Research. 

 - Second Edition. 
 - New York:  John Wiley&Sons,  1981. 
 - xxvii,436p.:  ill  24cm. 
<br/><br/><label>ISBN: </label>0471025437 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public Opinion Polls.
<br/><br/><label>Dewey Class. No.: </label>303.38 BAC.