TY  - BOOK
AU  - Dutton,Wilbur H
TI  - Evaluating pupils' understanding of arithmetic
U1  - 372.7 
PY  - 1964///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Arithmetic
N1  - Bibliography: p. 115-121
ER  -