TY  - BOOK
AU  - Verma, Rajesh  .
TI  - Fundamentals of computer operating systems / 
SN  - 978-81-261-6273-4
U1  - BV 
PY  - 2014///
CY  - New Delhi : 
PB  - Anmol Publications , 
KW  - Windows operating system
ER  -