TY  - BOOK
AU  - Vallier,Ivan
AU  - Apter,David Ernest
TI  - Comparative methods in sociology: Essays on trends and applications 
AV  - H61 V34
PY  - 1971///
CY  - Berkeley
PB  - University of California Press
KW  - Ciencias sociales
KW  - Metodología
ER  -