CIA World Factbook 2022-2023
2022
The CIA World Factbook 2024-2025
2024
The CIA World Factbook 2023-2024
2023
The CIA World Factbook 2021-2022
2021
Project Rand Special Memorandum No. 27 Some Aspects of Technical Intelligence Problems in Usaf
1955
Grill Flame Project Report, Dia/directorate for Scientific and Technical Intelligence
1983