TY  - BOOK
AU  - Hebb,Bertha Yell
TI  - Credit for professional improvement of teachers
T2  - [U.S.] Bureau of education.  Teacher's leaflet
AV  - L111 .A57 no. 16
PY  - 1922///]
CY  - [Washington
PB  - Govt. print. off.
KW  - Teachers
N1  - Caption title; At head of title:  Department of the interior
ER  -