Columbia subject headings:
German language--Dictionaries--English.
German language--Grammar.
Mathematics--Dictionaries--German.
Harvard subject headings:
German language--Dictionaries--English.
German language--Grammar--1870-
German language--Grammar.
Mathematics--Dictionaries--German
Princeton subject headings:
Dictionaries.
German language--Dictionaries--English.
German language--Grammar--1870-.
Mathematics--Dictionaries--German.