TY  - BOOK
AU  - Dogan Mattei Ed.
AU  -  Rokkan Stein Ed.
TI  - Quantitative ecological analysis in the social sci
T2  - MIT studies in comparative politics
U1  - Sigma: (G:5), K9 
PY  - 1969///
CY  - Cambridge
PB  - M I T Press       
KW  - Social Sciences
ER  -