TY  - BOOK
AU  - Ritchie,Colin
TI  - Operating systems: incorporating UNIX and MS-DOS 
AV  - QA76.76 .R58 1992
U1  - 005.43 22
PY  - 1992///]
CY  - New Delhi
PB  - BPB Publications
KW  - UNIX (Computer operating system)
KW  - MS-DOS (Computer operating system)
KW  - Operating systems (Computers)
N1  - Includes bibliographical references and index
ER  -