TY  - BOOK
AU  - Ray,Joan
AU  - Jay, William
TI  - UNIX System administration in 21days: Sams teachn yourself 
SN  - 0672316609
AV  - QA76.76.063 RAY
PY  - 2000///
CY  - New Delhi
PB  - BPB publications
KW  - Operating systems (Computers)
N1  - Includes bibliographic reference and index
ER  -