TY  - BOOK
AU  - Croft Hallard T.
AU  - Kenneth J.Falconer
AU  - Richard K.Guy
TI  - Unsolved Problems in Geometry: Problem Books In Mathematics Unsolved Problems in Intutive Mathematics
SN  - 0387975063
U1  - 516 
PY  - 1991///
CY  - New York
PB  - Springer Verlag
ER  -