00300nam a2200121Ia 4500082001800000100001600018245004000034260003400074300002100108490003900129500000500168700000500173  a516bAk315.MT  aAkin, Ethan  aMetric theory of banach manifoldsb  aBerlinbSpringer-Verlagc1978  axix, 306p. Index  aLecture notes in Mathematicsv 662  a  a