TY  - BOOK
AU  - Mathur, Rajiv 
TI  - Dos 6.2: quick reference 
SN  - 81-85623-11-2 
U1  - 005.43 MAT  
PY  - 1999///
CY  - Galkutia publications 
PB  - New Delhi 
KW  - Operating systems
ER  -