TY  - BOOK
AU  - Saettler,L.Paul
TI  - A history of instructional technology
AV  - LB885 .S15
U1  - 371.3 
PY  - 1967///, c1968]
CY  - New York
PB  - McGraw-Hill
KW  - Education
KW  - Philosophy
KW  - Local
KW  - Audiovisual education
KW  - Teaching
KW  - Aids and devices
N1  - Bibliography: p. [371]-384
ER  -