TY  - BOOK
AU  - Moerton,Robert Lee
TI  - Teaching arithmetic in the elementary school ... / 
U1  - 372.72 
PY  - 1937/// - 39
CY  - New York : 
PB  - Silver Burdett company , 
N1  -  Selected references at end of each chapter;  I. Primary grades. - II. Intermediate grades. - III. Upper grades
ER  -