000 00373nam a2200157 4500
008 160616s 000 0
245 _aManifolds of nonpositive curvature
100 _aBallmann
100 _aGromov
100 _aSchroeder
260 _aBoston
260 _bBirhauser
440 _aProgress in mathematics ; 00061
942 _cBK
_2BK1386
080 _a51 PM
999 _c1386
_d1386