TY  - BOOK
AU  - Coger,Rick
TI  - Developing effective instructional systems
SN  - 0815803273
PY  - 1975///
CY  - North Quincy, Mass
PB  - The Christopher Publishing House
KW  - Instructional systems
KW  - Teaching
KW  - Aids and devices
N1  - Bibliography: p. 137-142
ER  -