TY  - BOOK
AU  - Greenberg,Marvin Jay
TI  - Euclidean and non-Euclidean geometries: development and history 
SN  - 0716704544
PY  - 1974///
CY  - San Francisco
PB  - W. H. Freeman
KW  - Geometry
KW  - Geometry, Non
KW  - Euclidean
KW  - History
N1  - Bibliography: p.  291 -294
ER  -