TY - BOOK AU - Ballmann,Werner AU - Gromov,Mikhael AU - Schroeder,Viktor TI - Manifolds of nonpositive curvature T2 - Progress in mathematics SN - 081763181X AV - QA649 .B35 1985 U1 - 516.3/6 19 PY - 1985/// CY - Boston PB - Birkhäuser KW - Geometry, Differential KW - Manifolds (Mathematics) N1 - Based on four lectures delivered by M. Gromov in Feb. 1981 at Collège de France, Paris, with appendices by W. Ballmann and V. Schroeder; Includes index; Bibliography: p. 256-259 ER -