TY  - BOOK
AU  - Ritchie, Colin
TI  - Operating Systems Incorporating Unix and MS DOS 
U1  - 005.43 
PY  - 1993///
CY  - New Delhi : 
PB  - BPB Publications, 
KW  - MS DOS Computer Operating System
KW  - Operating Systems Computers
KW  - UNIX Computer File
N1  - NN
ER  -