Columbia subject headings:
Harvard subject headings:
German language--Article.
German language--Grammar, Comparative--Italian.
German language--Prepositions.
Italian language--Article.
Italian language--Grammar, Comparative--German.
Italian language--Prepositions.
Princeton subject headings:
German language--Articles.
German language--Grammar, Comparative--Italian.
German language--Prepositions.
Italian language--Articles.
Italian language--Grammar, Comparative--German.
Italian language--Prepositions.