Columbia subject headings:
Harvard subject headings:
German language--Grammar.
German language--Modality.
German language--Morphophonemics.
German language--Morphosyntax.
German language--Syntax.
Speech and gesture.
Princeton subject headings:
German language--Grammar.
German language--Modality.
German language--Morphophonemics.
German language--Morphosyntax.
German language--Syntax.
Speech and gesture.