Columbia subject headings:
German language--Spoken German.
German language--Study and teaching.
Oral communication--Study and teaching.
Harvard subject headings:
Dialogue--Study and teaching--Germany (West)
German language--Study and teaching--Germany (West)
Language and education--Germany (West)
Oral communication--Study and teaching--Germany (West)
Princeton subject headings:
Communication in education.
Conversation.
Dialogue.
Interaction analysis in education.