TY  - BOOK
AU  - Mahaffey,Michael L-
AU  - Perrodin,Alexander Frank
TI  - Teaching elementary school mathematics
PY  - 1973///
CY  - Itasca, Ill.
PB  - Peacock
KW  - Mathematics
KW  - Study and teaching (Elementary)
N1  - Bibliography: p. 316-345
ER  -