TY  - BOOK
AU  - Henry,Nelson B.
ED  - National Society for the Study of Education.
TI  - The teaching of arithmetic
T2  - Yearbook of the National Society for the Study of Education, 50th, pt. 2
AV  - LB5 .N25 50th, pt. 2
U1  - 370.62 
PY  - 1951///
CY  - Chicago
PB  - Distributed by the University of Chicago Press
KW  - Arithmetic
KW  - Study and teaching
KW  - Local
N1  - Includes bibliographies
ER  -