1983 Unix System User’s Manual Release 5.0

UNIX SVR4.2 Reference Manuals Set 1992 Command API UNIX Press

UNIX System V Release 4 SVR4 Documentation Set Prentice Hall 1992 Vintage

QUE - USING UNIX - STEVE MORITSUGU & DTR BUSINESS SYSTEMS

MS-DOS 5.0 Operating System Toshiba User's Manual 0224

UNIX in a Nutshell: System V Edition: System V, Release 4 (Nutshell Handbooks)

The Unix System Readings and Application Volume II, Red, acceptable condition

UNIX(R) System Security: A Guide for Users and System Administrators - GOOD