TY  - BOOK
AU  - Tolke Jurgen ed.
ED  - Geometry-Symposium( 1978 : Siegen )
ED  - Geometry-Symposium
TI  - Contributions to geometry: proceedings
U1  - 516 
PY  - 1979///
CY  - Basel
PB  - Birkhauser Verlag
KW  - Geometry
ER  -