TY  - BOOK
AU  - Thorpe,Cleata B.
TI  - Teaching elementary arithmetic
T2  - Harper's series on teaching
AV  - QA135 .T56
U1  - 372.7 
PY  - 1962///
CY  - New York
PB  - Harper
KW  - Arithmetic
KW  - Study and teaching (Elementary)
KW  - Local
N1  - Includes bibliography
ER  -