TY  - BOOK
AU  - Langdon,Danny G.
TI  - The audio-workbook
T2  - The Instructional design library
SN  - 0877781095
AV  - LB1043 .L28
U1  - 371.33/3 
PY  - 1978///
CY  - Englewood Cliffs, N.J.
PB  - Educational Technology Publications
KW  - Audiovisual education
KW  - Local
N1  - Bibliography: p. 61
ER  -