TY  - BOOK
AU  - Liao,Thomas T.
AU  - Miller,David C.
TI  - Systems approach to instructional disign: technology of learning systems series 
PY  - 1973///
CY  - New York
PB  - Baywood Publishing Comp. Inc.
KW  - Educational technology
KW  - Teaching
KW  - Aids and devices
ER  -