Pilots Handbook of Aeronautical Knowledge FAA-H-8083-25B: Flight Training Study Guide
Pilots Handbook of Aeronautical Knowledge: FAA-H-8083-25C
UAV-based Detection of Landmines and Unexploded Ordnance (UXO)
The Pilots Manual: Instrument Flying: Earn an Instrument Rating and Safely Fly Under Ifr and in IMC

