TY  - BOOK
AU  - Hatfield,Larry L.
TI  - Investigating mathematics: an interactive approach 
T2  - Student source book
SN  - 067513160x
U1  - 510 
PY  - 1994///
CY  - New York, New York
PB  - Glencoe
KW  - Mathematics
N1  - 500-599; 510
ER  -