01015nam--2200313---450099000107623020331620020507111926.0000107623USA01000107623(ALEPH)000107623USA0100010762320020507d1980----km-y0ENGy0103----baengDETopology Symposium Siegen 1979proceedings of a Symposium held at the Univeristy of Siegen, June 14-19, 1979edited by U. Koschorke and W.D. NeumannBerlinSpringer verlag1980VIII, 495 p.ill.24 cmLecture notes in mathematics7882001Lecture notes in mathematics788514ITsalbcISBD990001076230203316510 LNM 788993651000109888BKSCIALESSANDRA9020020507USA011119PATRY9020040406USA011714Topology symposium, Siegen 197980582UNISA