Aviation security
Subtitle: (digest of current ICAO policies and actions on the subject of unlawful interference with international civil aviation and its facilities)
Edition: 4th ed.
Series: Doc -- 8849-C/990/4; Doc (International Civil Aviation Organization) -- 8849
Publisher: International Civil Aviation Organization
Published: 1987
Place of publication: Montreal, Quebec, Canada
Language: eng
Number of pages: 36
Subjects: Commercial Aeronautics; Security measures
Notes: Cover title.

"April 1987."