OpenCV 3 Computer Vision with Python Cookbook
Aleksei Spizhevoi & Aleksandr Rybnikov
The Linux Command Line
William E. Shotts, Jr.
Applied Cryptography
Bruce Schneier
Hands-On Software Engineering with Python
Brian Allbee
Introduction to Sociology 2e
Heather Griffiths & Nathan Keirns & Gail Scaramuzzo & Susan Cody-Rydzewski & Eric Strayer & Sally Vyrain