FAA Pilot's Handbook of Aeronautical Knowledge
Federal Aviation Administration
PIC Microcontrollers: Know It All
Tim Wilmshurst & Dogan Ibrahim & Lucio Di Jasio & John Morton & Martin P. Bates & Jack Smith & David W Smith & Chuck Hellebuyck
Electronics Demystified, A Self-Teaching Guide
Stan Gibilisco
Demystified (2)
Introduction to Radar Systems
Merrill I Skolnik
Schaum's Outline of Digital Signal Processing
Monson Hayes