TY  - BOOK
AU  - Gagne,Robert Mills
AU  - Briggs,Leslie J
TI  - Principles of instructional design
SN  - 0030081718
PY  - 1974///
CY  - Rinehart and Winston, New York
PB  - Holt
KW  - Learning
KW  - Instructional systems
KW  - Design
N1  - Includes bibliographies
ER  -