TY  - BOOK
AU  - Croft, Hallard T. and Others
AU  - Falconer, Kenneth J. ;jt.auth.
AU  - Guy, Richard K. ; jt. auth.
TI  - Unsolved problems in geometry
T2  - Problem books in Mathematics
U1  - 516 
PY  - 1991///
CY  - New York
PB  - Springer-Verlag
ER  -