TY  - BOOK
AU  - Dutton,Wilbur H.
TI  - Arithmetic for teachers
U1  - 372.72 
PY  - 1961///
CY  - Englewood Cliffs NJ: 
PB  - Prentice-Hall
KW  - Arithmetic - Study and teaching
KW  - Teaching - Aids and devices
ER  -