The following is probably the set of those papers at the conference which address some aspect(s) of Reasoning about Actions and Change.
Stepankova, Olga: Planning in Uncertain Environments Through Situation Calculus. Topics: [sit-calculus], [planning]. Code: [Stepankova78A].
Schwind, Camilla: Representing Actions by State Logic. Topics: [modal-logic]. Code: [Schwind78A].