TY  - BOOK
AU  - Sampath, K.
TI  - Introduction to educational technology
U1  - 371.33 
PY  - 1998///
CY  - New Delhi
PB  - Sterling Publishers
KW  - Education-Technology
N1  - Education - then and now;
Learning and educational technology;
Communication and interaction;
Teaching aids;
Systems approach;
Reprographic equipment;
Chalkboard;
Projected aids;
Direct experiences;
Aural aids and tv;
Programmed instruction;
Teaching machines;
Instructional resources centre

ER  -