TY  - BOOK
AU  - Langdon,Danny G.
TI  - The construct lesson plan: improving group instruction
T2  - The Instructional design library
PY  - 1978///
CY  - Englewood Cliffs, N.J.
PB  - Educational Technology Publications
KW  - Lesson planning
KW  - Local
KW  - Home and school
N1  - Bibliography: p. 49-50
ER  -