00668nam a2200205Ia 4500020001500000082001700015100002100032245005000053260003500103300002600138490002700164500006400191500000500255690000600260700000500266952014700271964001700418921001000435999001700445  a0817652426  a516bB192.LS  aBallmann, Werner  aLectures on spaces of nonpositive curvatureb  aBaselbBirkhauser Verlagc1995  av, 112p. Bibl. Index.  aDMV Seminar band v 25  aWith an appendix by Misha Brin Ergodicity of Geodesic Flows  a  a   a  00104070aISIbISId2002-06-26eHBAg96220.80l0o516 B192.LSpDP25295r2019-02-14 00:00:00w2019-02-14yBKzOrd num:6228; Ord dt:2002-05-09  abcdefg  a21702  c21702d21702