Regulations and standards for the protection of air navigation
Subtitle: obstruction marking manual
By: U.S. Department of Commerce, Civil Aeronautics Administration
Publisher: Civil Aeronautics Administration
Published: 1943
Place of publication: Washington, D.C
Language: eng
Subjects: Air traffic rules; Airways; Lighting; Aids to air navigation
Other titles: Obstruction marking manual.
Notes: Cover title.

"August 1, 1943."