TY  - BOOK
AU  - Langdon, Danny G.
TI  - Interactive instructional designs for individualized learning
SN  - 0877780412
U1  - 371.394 L273i 
PY  - 1973///
CY  - New Jersey
PB  - Educational technology publications englewood cliffs
KW  - Instructional systems Design
KW  - Lesson planning
ER  -