TY  - BOOK
AU  - Hellevik Ottar
TI  - Introducation to causal analysis: Exploring survey data by crosstabulation
T2  - Contemporary Social Research Series
SN  - 0-04-312019-9
PY  - 1984///
CY  - London, UK
PB  - George Allen and Unwin Ltd 
KW  - Social Science-Research
ER  -