Columbia subject headings:
Harvard subject headings:
Dutch language--Adjective.
Dutch language--Morphology.
Dutch language--Noun.
Dutch language--Variation.
German language--Adjective.
German language--Morphology.
German language--Noun.
German language--Variation.
Princeton subject headings:
Dutch language--Adjective.
Dutch language--Morphology.
Dutch language--Noun.
Dutch language--Variation.
German language--Adjective.
German language--Morphology.
German language--Noun.
German language--Variation.