I have a book that has treated me well. It is a Linux book though. It is called "Linux Companion for System Administrators" by Hein. Two other "Linux" ones that I like are "Red Hat Linux Administrators Handbook" by kabir and "Linux for NT Administrators". Even though they are not Unix books I did find the information I needed to fix a SCO Unix 5.0 machine that I was working on.

--BigJoe

Learn patience, you must.
Young PerlMonk, craves Not these things.
Use the source Luke.