00723nam0-22002651i-450-990001274350403321000127435FED01000127435(Aleph)000127435FED0100012743520000920d1977----km-y0itay50------baengAction theory and social scienceSome Formal Modelsby Porn IngmarBoston [etc.]Reidel1977Synthese LibraryPorn,Ingmar50227ITUNINARICAUNIMARCBK990001274350403321C-25-(12019350MA1MA1Action theory and social science380531UNINAING01