TY  - BOOK
AU  - Pennings Paul
AU  -  Keman Hans
AU  -  Kleinnijenhuis Jan
TI  - Doing research in political science :  an introduction to comparative methods and statistics
U1  - W:f, N9(TTW) 
PY  - 1999///
CY  - London
PB  - Sage       
KW  - POLITICAL SCIENCE
ER  -