The Adventures of Sherlock Holmes
Arthur Conan Doyle
Operating System Concepts 7th Edition
Abraham Silberschatz & Peter B. Galvin & Greg Gagne
Operating System Concepts (3)
Software Libre Para Una Sociedad Libre
Richard M. Stallman
Ethical Hacking and Countermeasures: Secure Network Infrastructures
Ec-Council
Rake Task Management Essentials
Andrey Koleshko