http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 volume (various pagings) : digital, PDF file.
Title from PDF title screen (viewed Mar. 6, 2009).
AC 121-22, dated January 12, 1977, is cancelled.
Mode of access: Internet at the FAA web site. Address as of 3/6/09: http://www.airweb.faa.gov/Regulatory%5Fand%5FGuidance%5FLibrary/rgAdvisoryCircular.nsf/0/498aa3176cd47f93862569bc0057d2c8/$FILE/ATTEYP9U/AC121-22A.pdf ; current access available via PURL.
United States. Federal Aviation Administration.