00303nam a2200121Ia 4500082001700000100002300017245004300040260003400083300001500117490003900132500000500171700000500176  a512bG886.CT  aGruenberg, Karl W.  aCohomological topics in group theoryb  aBerlinbSpringer-Verlagc1970  axiv, 275p.  aLecture notes in Mathematicsv 143  a  a