Appendix 50
Subtitle: ground environmental model.
Contributors: United States. Federal Aviation Administration.
Publisher: Dept. of Transportation, Federal Aviation Administration
Published: 1977
Place of publication: [Washington, D.C.?]
Language: eng
Number of pages: 151
Subjects: Electromagnetic measurements.; Radio beacons.
Other titles: Ground environmental model.
Notes: Cover title.

"November 1977."

"FAA-ER-250-1."