Key, V. O. <br/><br/>
Politics, parties, and pressure groups. 

 - 3d ed. 
 - New York  Crowell  [c1952] 
 - xvi, 799 p.  illus.  24 cm. 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>LCCN: </label>52007851  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Politics, Practical<br/>Lobbying<br/>Political parties--United States.