TY  - BOOK
AU  - Ballmann,Werner
AU  - Gromov,Mikhael
AU  - Schroeder,Viktor
TI  - Manifolds of nonpositive curvature
SN  - 9781468491616 
U1  - 514.7 
PY  - 1985///
CY  - New York
PB  - Springer Science
KW  - MATHEMATICS
KW  - DIFFERENTIAL GEOMETRY
KW  - TOPOLOGICAL GROUPS
ER  -