TY  - BOOK
AU  - Ritchie, Colin
TI  - Operating systems: incorporating UNIX & windows 
SN  - 8176560197
AV  - QA76.76.O63.R58 2005 
PY  - 2005///
CY  - New Delhi
PB  - BPB Publications 
KW  - Operating system
N1  - Includes bibliography and index
ER  -