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. (n.d. ). "Stefan Hinz/Dugald Sturges: ICAO in Military Air Traffic Control – First Experiences with a New Language Proficiency Examination". In Stefan Hinz/Dugald Sturges: ICAO in Military Air Traffic Control – First Experiences with a New Language Proficiency Examination. Bern, Switzerland: , . Retrieved Oct 15, 2019, from https://www.peterlang.com/view/9783653020489/9783653020489.00012.xml