Gallup, George,  1901-1984. <br/><br/>
The pulse of democracy :  the public-opinion poll and how it works / 
by  George Gallup and Saul Forbes Rae. 
 - New York :  Greenwood Press,   c1940 [Reprinted 1968] 
 - viii, 335 p. ;  23 cm. 
<br/><br/>Bibliography: p. 326-328. and Index 
<br/><br/><label>Subjects--Corporate Names: </label><br/>American Institute of Public Opinion.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public opinion polls.
<br/><br/><label>Dewey Class. No.: </label>301.154  / GAP 1968