Columbia subject headings:
Enlightenment--Europe--Encyclopedias.
Enlightenment--Germany--Encyclopedias.
Europe--History--18th century--Encyclopedias.
Germany--History--18th century--Encyclopedias.
Harvard subject headings:
Enlightenment--Europe--Dictionaries.
Enlightenment--Europe--Encyclopedias.
Enlightenment--Germany--Dictionaries.
Enlightenment--Germany--Encyclopedias.
Europe--History--18th century--Encyclopedias.
Germany--History--18th century--Encyclopedias.
Princeton subject headings:
Enlightenment--Europe--Dictionaries.
Enlightenment--Germany--Dictionaries.
Europe--History--18th century--Dictionaries.
Germany--History--18th century--Dictionaries.