00330nam a2200121Ia 4500082001700000100002400017245003800041260003800079300002100117490006000138500000500198700000500203  a514bP588.CW  aPiccinini, Renzo A.  aCW - complexes, homology theoryb  aOntariobQueen's Universityc1973  aiii, 129p. Bibl.  aQueen's papers in Pure and Applied Mathematicsv no. 34  a  a