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

 - 5th ed. 
 - New York  Thomas Y Crowell company  1942 
 - xi, 738 p.; 23cm. 
<br/><br/><label>ISBN: </label>690647859 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Divided government<br/>Interest groups<br/>Political parties<br/>Pressure groups