TY  - BOOK
AU  - Cram,David
TI  - Explaining "teaching machines" and programming
U1  - 371.3944 
PY  - 1961///
CY  - San Francisco, Calif.
PB  - Fearon
KW  - Teaching machines
KW  - Programmed instruction
N1  - Bibliography: p. 82
ER  -