TY  - BOOK
AU  - Foster, David
TI  - Exploring circles: an alternative unit for analyzing circles 
SN  - 0028242181
U1  - CIR 516.152 F754 1996 
PY  - 1996///
CY  - New York, N.Y.
PB  - Glencoe/McGraw-Hill
KW  - Geometry, Plane
KW  - Shapes
ER  -