Symposium on Several Complex Variables Park City Utah 1970 Some analytic function algebras A local characterization of analytic structure in a commutative Banach algebra A differential version of a theorem of mergelyan Polynomial approximation on thin sets On an example of Stolzenberg Flat differential operators Fiber integration and some applications Parametrizing the compact submanifolds of a period matrix domain by a Stein manifold Generalizations of Grauerts direct image theorem Cohomology of analytic families of differential complexes Families of strongly pseudoconvex manifolds Extending analytic subvarieties On algebraic divisors in K Problems.