TY  - BOOK
AU  - Singh, Shankar  .
TI  - Computer and information technology / 
SN  - 81-86624-14-7
U1  - O152,6(BV) 
PY  - 2000///
CY  - Delhi : 
PB  - Poorvanchal Prakashan , 
KW  - Information technology
ER  -