Columbia subject headings:
German language--Dictionaries--Polyglot.
Industrial hygiene--Law and legislation--Germany--Dictionaries.
Industrial safety--Law and legislation--Germany--Dictionaries.
Social legislation--Germany--Dictionaries.
Harvard subject headings:
German language--Dictionaries--Polyglot.
Industrial hygiene--Law and legislation--Germany--Dictionaries.
Industrial safety--Law and legislation--Germany--Dictionaries.
Social legislation--Germany--Dictionaries.
Princeton subject headings: