TY  - BOOK
AU  - Hellevik,Ottar
TI  - Introduction to causal analysis: exploring survey data by crosstabulation 
T2  - Contemporary social research series
SN  - 0043120199
PY  - 1984///
CY  - London
PB  - George Allen & Unwin
KW  - Social sciences
KW  - Research
KW  - Addresses, essays, lectures
KW  - Social surveys
N1  - Includes index; Bibliography : p. 206-207
ER  -