OBSERVATION
From osint.info
Books
Author | Issuer | Title | Published | ISBN | Tags |
JENKINS, PETER | Intel Publications | Surveillance Tradecraft: The Professional's Guide to Surveillance Training | 2010 | 978-0953537822 | OBSERVATION |
GLITZA, KLAUS-HENNING | Observation - Praxisleitfaden für private und behördliche Ermittlungen | 3-415-02961-1 | OBSERVATION |