TY  - BOOK
AU  - Berger,M.,et al
ED  - Berry, J
ED  - Pansu, P
ED  - Saint-Raymond, X
TI  - Problems in geometry
T2  - Problem books in mathematics
SN  - 0-387-90971-0
U1  - 8.01+19 
PY  - 1984///
CY  - New York
PB  - Springer
ER  -