TY  - BOOK
AU  - Wilson Graham K
TI  - Interest groups
T2  - Comparative Politics
SN  - 0631160515
U1  - W,5, N0 
PY  - 1990///
CY  - Oxford
PB  - Basil Blackwell         
KW  - Political Parties
N1  - Bibliography:  p 187-194
ER  -