TY  - BOOK
AU  - Dilley, Clyde A
TI  - Heath elementary mathematics
SN  - 0669900508
U1  - 513 
PY  - 1975///
CY  - Toronto
PB  - D.C. Health and Company
KW  - Mathematics--Study and teaching (Elementary)
KW  - Arithmetic--Study and teaching (Elementary)
KW  - Arithmetic
KW  - Mathematics
KW  - Mathematics--Study and teaching
N1  - Include Index
ER  -