TY  - BOOK
AU  - Von Wright Georg Henrik
TI  - Essay in deontic logic and the general theory of a
T2  - Acta Philosophical Fennica. 21
U1  - R1, K8 
PY  - 1968///
CY  - Amsterdam
PB  - North Holland Netherland        
KW  - Philosophy-Logic
N1  - Bibliography: P 97-107
ER  -