TY  - BOOK
AU  - Aggarwal,D.D.
TI  - Education technology
SN  - 81-7625-463-0
U1  - 371.334 
PY  - 2005///
CY  - New Delhi
PB  - Sarup
KW  - Education
KW  - Instrumentation-Package
KW  - Vocational-Education
N1  - Includes index; UBH
ER  -