TY  - GEN
AU  - Greenberg, Marvin Jay
TI  - Euclidean and non-Euclidean geometries: development and history
SN  - 0716704544
U1  - 516.009 
PY  - 1974///
CY  - San Franciscco
PB  - W.H. Freeman
KW  - MATHEMATICS
ER  -