TY  - BOOK
AU  - Jain, Satish
AU  - Jain, Shashank
TI  - Introductory information technology ( Secondary stage Vol I - II ): the complete text book for class X 
SN  - 81-7656-620-9
PY  - 2002///
CY  - New Delhi
PB  - BPB Publications
ER  -