TY  - BOOK
AU  - Koschorke U ed.
ED  - Topology Symposium( 2nd : 1987 : Siegen )
ED  - 
TI  - Differential topology: Proceedings
U1  - 514 
PY  - 1988///
CY  - Berlin
PB  - Springer-Verlag
KW  - Topology
ER  -