00743nam a2200181Ia 450000500170000000800410001702000130005808200160007110000220008724500420010926000540015130000170020550501080022294200080033099900170033895201030035595201030045820241211205649.0241211s1952    xx            000 0 und d  afcnm2509  a514.22I/P77  aPontryagin, L. S. 0aFoundations of Combinatorial Topology  aUnited States of America :bGraylock Press,c1952  a99 páginas  a1.Complexes and their groups. 2.The invariance of betti groups. 3.Continuous mappings and fixed points.  yLIB  c51730d51730  00104070aBE-FCNMbBE-FCNMcTPd2018-09-19eDonacionfBuenoo514.22I/P77pFCNM3936yLIBzInterno  00104070aBE-FCNMbBE-FCNMcTPd2018-09-26eDonacionfBuenoo514.22I/P77pFCNM3971yLIBzInterno