TY  - BOOK
AU  - Deitel, Harvey M.
AU  - Choffnes, David R.
TI  - Operating Systems 
SN  - 8131712893
U1  - 005.43 
PY  - 2004///
CY  - New Delhi : 
PB  - Pearson Education, 
KW  - Operating Systems Computers
N1  - YY
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/81-317-1289-3.pdf
ER  -