Columbia subject headings:
Harvard subject headings:
Berlin (Germany)--Intellectual life--18th century--Congresses.
Enlightenment--Germany--Berlin--Congresses.
Formey, Jean-Henri-Samuel, 1711-1797--Congresses.
Formey, Jean-Henri-Samuel, 1711-1797--Correspondence--Congresses.
Princeton subject headings:
Berlin (Germany)--Intellectual life--18th century--Congresses.
Enlightenment--Congresses.
Formey, Jean-Henri-Samuel, 1711-1797--Congresses.