00317nam a2200121Ia 4500082001600000100002100016245005900037260003400096300001600130490003900146500000500185700000500190  a516bJ65.HE  aJohannson, Klaus  aHomotopy equivalences of 3-maniflods with boundariesb  aBerlinbSpringer-Verlagc1979  a303p. Index  aLecture notes in Mathematicsv 761  a  a