TY  - BOOK
ED  - National Education Association of the United States.
TI  - The problem of mathematics in secondary education
T2  - U.S. Bureau of education. Bulletin 1920,
AV  - L111 .A6 1920, no. 1
U1  - 370.6173 s 
PY  - 1920///
CY  - Washington
PB  - Govt. print. off.
KW  - Mathematics
KW  - Study and teaching (Secondary)
N1  - At head of title: Department of the interior. Bureau of education; Copy 1 bound with: Bulletin / United States. Bureau of Education, 1920, no. 2-1920, no. 12, subsequent to publication
ER  -