TY  - BOOK
AU  - Gagne, Robert Mills,
AU  - Briggs, Leslie J.
TI  - Principles of instructional design
SN  - 0030081718
U1  - 371.3 
PY  - 1974///
CY  - New york
PB  - Holt, Rinehart and Winston
KW  - Learning, Psychology of
KW  - Lesson planning
N1  - Includes bibliographical references and index
ER  -