Columbia subject headings:
Interlanguage (Language learning)--Congresses.
Languages, Modern--Mutual intelligibility--Congresses.
Translating and interpreting--Congresses.
Harvard subject headings:
Interlanguage (Language learning)--Congresses.
Languages, Modern--Mutual intelligibility--Congresses.
Translating and interpreting--Congresses.
Princeton subject headings:
Interlanguage (Language learning)--Congresses.
Languages, Modern--Mutual intelligibility--Congresses.
Translating and interpreting--Congresses.