TY  - BOOK
AU  - Porn Ingmar
TI  - Action theory and social science :  some formal models
T2  - Synthese library; 120
U1  - R39(Y), L7 
PY  - 1977///
CY  - Dordrecht
PB  - D R Pub     
N1  - Bib 124-25p
ER  -