Greenwald, Carol Schwartz. <br/><br/>
Group power :  lobbying and public policy / 
Carol S. Greenwald. 
 - Praeger Publishers :  New York,  1977. 
 - ix, 372 p. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography : p. 345-351. 
<br/><br/><label>ISBN: </label>0030382769 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lobbying--United States.<br/>Pressure groups--United States.