Credit for professional improvement of teachers.
Hebb, Bertha Yell.
Credit for professional improvement of teachers. By Bertha Y. Hebb. - [Washington, Govt. print. off., 1922] - 7 p. 23 cm. - [U.S.] Bureau of education. Teacher's leaflet no. 16. March, 1922. .
Caption title. At head of title: Department of the interior.
e 22000387
Teachers.
L111 / .A57 no. 16
Credit for professional improvement of teachers. By Bertha Y. Hebb. - [Washington, Govt. print. off., 1922] - 7 p. 23 cm. - [U.S.] Bureau of education. Teacher's leaflet no. 16. March, 1922. .
Caption title. At head of title: Department of the interior.
e 22000387
Teachers.
L111 / .A57 no. 16