00980cam a22002411a 4500 e 11001582 DLC 20260227111156.0 830531s1911 dcu f001 0 eng c e 11001582 (OCoLC)9560879 Library, U.S. Bur. of Education ABAU ABAU DLC premarc L111 .A6 1911, no. 3 LB1731 .R8 Ruediger, William Carl, 1874- Agencies for the improvement of teachers in service / by William Carl Ruediger. Washington : G.P.O., 1911. 157 p. ; 23 cm. Bulletin / U.S. Bureau of Education ; 1911, no. 3 = Whole no. 449 L111.A6 with: Bibliography of science teaching / American federation of teachers of the mathematical and the natural sciences. Washington : Govt. Print. Off., 1911. Bound together subsequent to publication. DLC Teachers Training of United States. 19226 19226