TY  - BOOK
AU  - Sampath,K.
AU  - Pannirselvam,A.
AU  - Santhanam,A.
TI  - Introduction to educational technology
U1  - 371.3 
PY  - 1981///
CY  - New Delhi
PB  - Sterling Publishers
KW  - Active learning
KW  - Instructional systems
N1  - Includes bibliographical references and index
ER  -