TY  - BOOK
AU  - Gerlach, Vernon S., 1922-
AU  - Donald P. Ely
TI  - Teaching and media: : A Systematic approach
AV  - 71138476 
U1  - 371.3078 G371t 
PY  - 1971///
CY  - New Jersy
PB  - Prentice-hall, inc
KW  - Audio-visual education
KW  - Instructional materials
KW  - Teaching Materials
KW  - Teaching Aids and devices
ER  -