TY  - BOOK
AU  - Russell,James D.
TI  - The audio-tutorial system
SN  - 0877781079
AV  - LB1049 .R88
U1  - 371.39/4 
PY  - 1978///
CY  - Englewood Cliff, N.J.
PB  - Educational Technology Publications
KW  - Independent study
KW  - Audio-visual education
KW  - Programmed instruction
N1  - Bibliography: p. 61
ER  -