TY  - BOOK
ED  - United States.
TI  - Science teaching in secondary schools in the war emergency
T2  - Secondary school circular
AV  - L111 .A565 no. 3
PY  - 1918///]
CY  - [Washington
PB  - Govt. Print. Off.
KW  - Science
KW  - Study and teaching
KW  - Education, Secondary
N1  - Caption title; At head of title: Department of the Interior
ER  -