Columbia subject headings:
Harvard subject headings:
Contrastive linguistics--Congresses
German language--Morphology--Congresses.
German language--Phonetics--Congresses.
German language--Study and teaching--Foreign speakers--Congresses.
German language--Study and teaching--Italian speakers--Congresses.
German language--Technical German--Congresses.
Sociolinguistics--Congresses
Princeton subject headings:
German language--Grammar.
German language--Study and teaching--Foreign speakers.
German language--Study and teaching.