TY  - BOOK
AU  - Koschorke, Ulrich 
AU  - Neumann, W. D.
TI  - Topology Symposium, Siegen 1979: : proceedings of a symposium held at the University of Siegen, June 14-19, 1979 
SN  - 0387099689
U1  - 514 
PY  - 1980///
CY  - Berlin
PB  - Springer-Verlag
ER  -