UNIX Shell Programmer's - Paperback, by Vickery Christopher - Very Good

UNIX Shell Programmer's Interactive Workbook by Vickery, Christopher

UNIX for FORTRAN Programmers (Nutshell Handbooks)

Unix Awk and Sed Programmer's Interactive Workbook by Peter Patsis

Unix Programmer's Reference - Paperback, by Valley John - Acceptable

UNIX Programmer's Manual Vol. 5 Languages and Support Tools Book Reference

Advanced Unix User's Interactive Workbook

UNIX for Programmers and Users, Graham Glass, 3rd Ed, Hardback, Good