Absolute FreeBSD: The Complete Guide to FreeBSD, 2nd Edition
Michael W. Lucas
Teach Yourself Electricity and Electronics, 6th Edition
Stan Gibilisco & Simon Monk
Augmented Reality for Android Application Development
Jens Grubert & Dr. Raphael Grasset
Proxmox High Availability
Simon M. C. Cheng
The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall
Peter N. M. Hansteen