TY  - BOOK
AU  - Joreskog K G
AU  - Wold H
TI  - Systems under indirect observation: Casuality, structure, prediction
U1  - 300.182 
PY  - 1982///
CY  - Amsterdam
PB  - North-Holland
KW  - Casuality
KW  - Human life
KW  - Socialscience
ER  -