CONTENTS VOLUME 63, 1991 ANDERSON, MICHAEL T. Remarks on the compactness of isospectral sets in low dimensions ARNOLD, V. I. Bernoulli-Euler updown numbers associated with function singularities, their combinatorics and arithmetics ASHBAUGH, MARK S. AND RAFAEL D. BENGURIA. Isoperimetric bound for 43/4, for the membrane problem ASHBAUGH, MakK S., RAFAEL D. BENGURIA, AND CECILIA YARUR. Properties of the positive solution of a generalized Thomas-Fermi-von Weizsacker equation BASTON, R. J. Almost Hermitian symmetric manifolds I: local twistor theory BaSTON, R. J. Almost Hermitian symmetric manifolds IT: differential invariants BENGURIA, RAFAEL D. AND MARK S. ASHBAUGH. Isoperimetric bound for /;/A, for the membrane problem BENGURIA, RAFAEL D., MARK S. ASHBAUGH, AND CECILIA YARUR. Properties of the positive solution of a generalized Thomas-Fermi-von Weizsacker equation Bump, DANIEL, SOLOMON FRIEDBERG, AND JEFFREY HOFFSTEIN. p-adic Whittaker functions on the metaplectic group BURCHARD, PAUL. Differential operators on cones CHEN, WENXIONG AND CONGMING LI. Classification of solutions of some nonlinear elliptic equations CossarT, V. Contact maximal en caractéristique positive et petite multiplicité DENEF, J. Local zeta functions and Euler characteristics EASTWoopD, MICHAEL G. AND C. ROBIN GRAHAM. Invariants of conformal densities FRIEDBERG, SOLOMON, DANIEL BUMP, AND JEFFREY HOFFSTEIN. p-adic Whittaker functions on the metaplectic group GorDON, CAROLYN S. AND THOMAS KAPPELER. On isospectral potentials on GRAHAM, C. ROBIN AND MICHAEL G. Eastwoop. Invariants of conformal densities HareR, JOHN. The third homology group of the moduli space of curves .... HOFFSTEIN, JEFFREY, DANIEL BUMP, AND SOLOMON FRIEDBERG. p-adic Whittaker functions on the metaplectic group JosHua, Roy. Higher K-theory of the category of weakly equivariant Y-modules KAPPELER, THOMAS AND CAROLYN S. GORDON. On isospectral potentials on tori KASHIWARA, M. On crystal bases of the Q-analogue of universal enveloping algebras LEBRUN, CLAUDE. On complete quaternionic-Kahler manifolds Li, CONGMING AND WENXIONG CHEN. Classification of solutions of some nonlinear elliptic equations LICHTIN, BEN. The asymptotics of a lattice point problem associated to a finite number of polynomials I. Ma, Daowel. Boundary behavior of invariant metrics and volume forms on strongly pseudoconvex domains MENDOzaA, G. A. AND F. TREVES. Local solvability in a class of overdetermined systems of linear PDE MIMACHI, KATSUHISA AND MASATOSHI NoumI. Rogers’s q-ultraspherical polynomials on a quantum 2-sphere NoumI, MASATOSHI AND KATSUHISA MIMACHI. Rogers’s g-ultraspherical polynomials on a quantum 2-sphere Pita, J. Geometric postulation of a smooth function and the number of rational points POENARU, V. Killing handles of index one stably, and z?. PoENARU, V. On the equivalence relation forced by the singularities of a nondegenerate simplicial map RATNER, MARINA. Raghunathan’s topological conjecture and distributions of unipotent flows Ross, Marty. The end behavior of complete 2-dimensional area-minimizing mod 2 surfaces in R” SALBERGER, P. AND A. N. SKOROBOGATOV. Weak approximation for surfaces defined by two quadratic forms SHIMURA, Goro. The critical values of certain Dirichlet series attached to Hilbert modular forms SKOROBOGATOV, A. N. AND P. SALBERGER. Weak approximation for surfaces defined by two quadratic forms SmiTH, Hart F. Parametrix construction for a class of subelliptic differential operators TAYLOR, RICHARD. Galois representations associated to Siegel modular forms of low weight To, WING-KEUNG. Quasi-projective embeddings of noncompact complete Kahler manifolds of positive Ricci curvature and satisfying certain topological conditions TREVES, F. AND G. A. MENDOZA. Local solvability in a class of overdetermined systems of linear PDE VisTOLI, ANGELO. Higher equivariant K-theory for finite group actions YAMAMOTO, Hiro-o. An example of a nonclassical Schottky group YARUR, CECILIA, MARK S. ASHBAUGH, AND RAFAEL D. BENGURIA. Properties of the positive solution of a generalized Thomas-Fermi-von Weizsacker equation International Mathematics Research Notices papers are not listed here and will be indexed separately.