shieldWAR
Balloon observation, and instructions on the subject of work in the basket
United States. War Department. Division of Military Aeronautics
Balloon observation, and instructions on the subject of work in the basket
- Balloons
- Aerial observation (Military science)
- Military reconnaissance
- Aerial reconnaissance
Download the EPUB from the book's page, then open it in Eqtepas and highlight any passage you love — it's saved with the book title and its place.