TY  - BOOK
AU  - Nowak,Stefan
AU  - Lepa,Maria Olga
TI  - Methodology of sociological research: General problems 
T2  - Synthese library
SN  - 9027704864
U1  - 301.018 
PY  - 1977///
CY  - Holland
PB  - D Reidel Publishing
KW  - Social surveys
KW  - Sociology, Methodology
ER  -