Citizens, political communication, and interest groups :  environmental organizations in Canada and the United States / 
John C. Pierce... [et al.] 
 - Westport :  Praeger,  1992       
 - xviii, 225 p. 
 - Praeger series in political communication .
<br/><br/><label>ISBN: </label>0275935795 
<br/><br/><label>LC Class. No.: </label>P 95.8 P897c 1992