Using and Administering Linux: Volume 1
David Both
grep Pocket Reference
John Bambenek
Introduction to Java Programming and Data Structures
Comprehensive Version
Django 2 by Example
Antonio Mele
Introduction to Sociology 2e
Heather Griffiths & Nathan Keirns & Gail Scaramuzzo & Susan Cody-Rydzewski & Eric Strayer & Sally Vyrain