Group Actions and Vector Fields : Proceedings of a Polish North American Seminar Held at the University of British Columbia January 15 – February 15 1981 Vector fields and cohomology of G P Complete quotients by algebraic torus actions A generalization of a theorem of Horrocks Almost homogeneous C* actions on compact complex surfaces Weighted projective varieties A pathological example of an action of k* Properties of projective orbits of actions of affine algebraic groups Linearization of reductive group actions Holomorphic vector fields and rationality Some examples of * actions The growth function of a discrete group.