TY  - BOOK
AU  - Rasmussen,Steven
TI  - Discovering Geometry : : with the geometer's sketchpad / 
SN  - 1559532092
U1  - 516/ M423d 22
PY  - 1997///
CY  - New York
PB  - Key Curriculum Press, 
KW  - Discovering Geometry
ER  -