TY  - BOOK
AU  - Merrill,David M.
TI  - Instructional design: readings
PY  - 1971///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Teaching
KW  - Aids and devices
KW  - Local
N1  - Includes bibliographies
ER  -