Классификация угроз национальной безопасности шпаргалка

The University Press of Kentucky, 2006. — 391 p. — ISBN-13: 978-0-8131-2374-5. According to Robin Higham and Stephen J. Harris, "Flight has been part of the human dream for aeons, and its military application has likely been the dark side of that dream for almost as long.".