TY  - BOOK
AU  - Bullock,Donald H.
TI  - Programmed instruction
SN  - 0877781184
AV  - LB1028.5 .B84
U1  - 371.39/442 
PY  - 1978///
CY  - Englewood Cliffs, N.J.
PB  - Educational Technology Publications
KW  - Programmed instruction
N1  - Bibliography: p. 77
ER  -