| Reference text: |
US Department of Defense, US Air Force (USAF). Civil Engineer Guide to Fighting Positions, Shelters, Obstacles, and Revetments [online]. Vol. 14. Washington: USAF, 2008 [cited 16 November 2011]. Available from World Wide Web: <http://www.e-publishing.af.mil/shared/media/epubs/AFH10-222V14.pdf>. Air Force handbook AFH 10-222V14. |
