Columbia subject headings:
German language--Dictionaries.
German language--Orthography and spelling.
Harvard subject headings:
German language--Dictionaries.
German language--Orthography and spelling--Dictionaries
German language--Orthography and spelling.
German language--Reform.
Princeton subject headings:
Dictionaries.
German language--Dictionaries.
German language--Orthography and spelling.
German language--Reform.