TY - GEN AU - Koschorke,U AU - Neumann,W.D TI - Topology Symposium, Siegen 1979: proceedings of a symposium held at the University of Siegen, June 14-19, 1979 T2 - Lecture notes in mathematics SN - 0387099689 (U.S.) U1 - 510 514 PY - 1980/// CY - Berlin, New York PB - Springer-Verlag KW - Topology KW - Congresses N1 - Cuprinde bibliografie pe capitole ER -