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Spartengewerkschaften als Herausforderung für etablierte Akteure
Brecht-Heitzmann, Holger, (2013)
Airline mergers and acquisitions: the question of labor protection : hearing before the Subcommittee on Aviation of the Committee on Commerce, Science, and Transportation, United States Senate, 99th Congress, 1st session ..., November 21, 1985
(1986)
General aviation pilot and aircraft activity survey
Frank, Carolyn, (1985)