TY  - BOOK
AU  - Deitel Harvey M.
AU  - Deitel Paul.J
AU  - Choffnes David R.
TI  - Operating System
SN  - 9788131712894
U1  - 005.43 
PY  - 2019///
CY  - Delhi
PB  - Pearson Education (India)Pvt.Ltd.
KW  - Operating systems (Computers)
ER  -