TY  - BOOK
ED  - UNIX System Laboratories
TI  - Unix system v release 4. user's reference manual: System administrator's reference manual 
SN  - 0135876680
AV  - QA76.76O63 U586
PY  - 1992///
CY  - Englewood cliffs, new jersey
PB  - Prentice Hall
KW  - UNIX System V (Sistema operativo)
ER  -