Walter Schwenk <br/><br/>
Aspects of international co-operation in air traffic management 

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 - Hague  Martinus Nijhoff Publishers  1998 
 - 309 
<br/><br/><label>ISBN: </label>9041104976 
<br/><br/><label>LC Class. No.: </label>TL 723.3  / SCH 1998