Synonyms were used for: English English language language
Search without synonyms: keywords:(English language)

1–1 of 1 hits
|

    ICAO English Language Proficiency Rating Scale Applied to Enroute Voice Communication of U.S. and Foreign Pilots

    O. V. Prinzo / A. C. Thompson | NTIS | 2009
    Keywords: English language , Language proficiency rating , Lpr(Language proficiency rating)