Johnson, Janat Buttolph ; Joslyn, Richard A. <br/><br/>
Political Science Research Methods 
/ by Janat Buttolph Johnson 
 - NewDelhi:  Prentice-Hall,  1987. 
 - 364p. 
<br/><br/><label>ISBN: </label>0876924917 
<br/><br/><label>Dewey Class. No.: </label>320.72  / JOH/P