TY  - BOOK
AU  - Hellevik Ottar
TI  - Introduction to causal analysis: exploring survey data by crosstabulation
U1  - 000SB:300 
PY  - 1984///
CY  - London
PB  - George Allen and Unwin
KW  - Causal analysis
KW  - Cross tabulation
KW  - Exploring survey data
ER  -