TY  - BOOK
AU  - Morton,Robert Lee
ED  - Silver Burdett Company
TI  - Modern arithmetic through discovery
U1  - 372.7 23
PY  - 1962///-.
CY  - Morristown, N.J.: 
PB  - Silver Burdett, 
KW  - Mathematics
KW  - Study and teaching (Elementary)
KW  - Arithmetic
ER  -