Bernstein, Robert A. ,  1944- <br/><br/>
An introduction to political science methods / 
Robert A. Bernstein, James A. Dyer 
 - 3rd ed. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1992 
 - xv, 327 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>013489071X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Political science--Methodology<br/>Political science--Research