Plný text je přístupný pouze z počítačů Ostravské univerzity
None issued for 2011.
Mode of access: Internet at the USDA Forest Service, Fire & Aviation Management web site. Address as of 04/06/07: http://www.fs.fed.us/fire/av_safety/airwards/index.html; current access is available via PURL.
Description based on: Sept. 2002; title from title screen (viewed 04/06/07).
Latest issue consulted: 2012, issue 1 (viewed June 1, 2012).