TY  - BOOK
AU  - Vallier,Ivan
AU  - Apter,David Ernest
TI  - Comparative methods in sociology: Essays on trends and applications 
SN  - 0520017439
PY  - 1971///
CY  - Berkeley
PB  - University of California Press
KW  - Social sciences
KW  - Methodology
N1  - Bibliogr.: p. 423-467
ER  -