TY  - BOOK
AU  - Spross,Patricia McNitt
TI  - Elementary arithmetic and learning aids
AV  - L111 .A72 no. 784
PY  - 1965///
CY  - Washington
PB  - U.S. Dept. of Health, Education, and Welfare, Office of Education ; [for sale by the Superintendent of Documents, U.S. Govt. Print. Off.
KW  - Arithmetic
KW  - Study and teaching (Elementary)
KW  - Mathematics
KW  - Teaching
KW  - Aids and devices
N1  - "OE-29063."; L111.A72 no. 784 bound with Circular no. 785-no. 789 subsequent to publication; Bibliography: p. 129-134
ER  -