Gerber, Alan S. <br/><br/>
Field experiments :  design, analysis, and interpretation / 
Alan S. Gerber, Donald P. Green. 
 - New York :  W. W. Norton,  2012. 
 - xvii, 492 p. : 
<br/><br/><label>ISBN: </label>9780393979954 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Political science
<br/><br/><label>Dewey Class. No.: </label>001.434  / Fi