TY  - BOOK
AU  - Hartley,James
ED  - Butterworths
TI  - Strategies for programmed instruction: an educational technology ; edited by J. Hartley
SN  - 0408702524
U1  - 371.3944 23
PY  - 1972///.
CY  - London: 
PB  - Butterworths, 
KW  - Programmed instruction
KW  - Educational technology
N1  - Includes bibliography: p. 209-224 and index
ER  -