Understanding UNIX A conceptual guide

The Unix Programming - Paperback, by Brian W. Kernighan; - Acceptable

UNIX For Dummies - Paperback By Levine, John R. - GOOD

CONCEPTUAL UNDERSTANDING IN MATHEMATICS: By Brian R. Evans NEW Paperback

UNIX Network Programming - Paperback By Stevens, W Richard - VERY GOOD

Using SQL - Paperback, by James R. Groff; Paul N. Weinberg - Good

Learning the bash Shell: Unix Shell - Paperback, by Newham Cameron - Acceptable

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