TY  - BOOK
AU  - Ray, P.K.S.  .
TI  - Educational technology: technology of instructional design / 
SN  - 978-93-80642-22-2
U1  - T:(F) 
PY  - 2012///
CY  - New Delhi : 
PB  - Dominant Publishers and Distributors , 
KW  - Learning technology
ER  -