00556 a2200193 4500 Eng. 371.39 F945t Fry, Edward Bernard, 1925- 17276 Teaching machines and programmed instriction; an introduction New York McGraw Hill 1963 x, 244p. illus. p. 185-194 Teaching machines 17277 Education Objectives 17278 Programming 4023 Industrials 17282 Programmed Instruction ddc GEN 57782 57776