01146cam a22002891 4500 e 37000364 DLC 20260227111226.0 831121s1937 dcu f000 0 eng c e 37000364 (OCoLC)10151547 U.S. Off. of Education GASU GASU DLC premarc L111 .A75 no. 80 LB1044 .K67 Koon, Cline Morgan, 1894- comp. Sources of visual aids and equipment for instructional use in schools, compiled by Cline M. Koon. Washington, U.S. Govt. Print. Off., 1937. iii, 44 p. 23 cm. U.S. Office of Education. Pamphlet no. 80 Later edition by U.S. Office of Education. L111.A75 with: Safety and health of the school child / James Frederick Rogers. Washington : U.S. Govt. Print. Off., 1937. Bound together subsequent to publication. DLC Motion pictures Catalogs. Slides (Photography) Catalogs. Visual education. Visual aids and equipment for instructional use in schools. 21561 21561