TY  - BOOK
AU  - Collier David Ed.
AU  -  Gerring John Ed.
TI  - Concepts and method in social science :  The tradition of giovanni sartori
SN  - 9780415775786 (PBK)
U1  - Sigma:f, P9 
PY  - 2009///
CY  - New York
PB  - Routledge USA      
KW  - SOCIAL SCIENCES
ER  -