00783nam0-22002771i-450-990001129640403321000112964FED01000112964(Aleph)000112964FED0100011296420000920d--------km-y0itay50------baengManifolds of Nonpositive Curvatureby Ballman,Gromov and SchroederBoston [etc.]BirkhauserProgress in mathematics61Ballman,Werner348383Gromov,MikhaelSchroeder,ViltorITUNINARICAUNIMARCBK990001129640403321C-3-(612302MA1MA1Manifolds of Nonpositive Curvature344828UNINAING01