Obstruction marking
Subtitle: the painting and lighting of structures which are potential hazards to air commerce.
Publisher: U.S. Govt. Print. Off.
Published: 1951
Place of publication: Washington
Language: eng
Number of pages: 27
Subjects: Aeronautics -- Safety measures.
Notes: "The contents of this booklet supersede all material contained in the 'Obstruction marking manual' issued ... August 1, 1943."