TY  - BOOK
AU  -  Duverger,Maurice
TI  -  Party politics and the pressure groups : :  a comparative introducti on / 
U1  -  324.2 DUV 
PY  - 1972///
CY  -  New york : 
PB  -  Thomas Y. Crowell Company, 
KW  -  Political parties
N1  -  Includes bibliographical references  (P.157-158)
ER  -