Columbia subject headings:
Baltic States--Intellectual life--Congresses.
Baltic States--Politics and government--Congresses.
Baltic States--Social life and customs--Congresses.
Enlightenment--Baltic States--Congresses.
Harvard subject headings:
Baltic States--Intellectual life--Congresses.
Baltic States--Politics and government--Congresses.
Baltic States--Social life and customs--Congresses.
Enlightenment--Baltic States--Congresses.
Princeton subject headings:
Baltic States--Intellectual life--Congresses.
Baltic States--Politics and government--Congresses.
Baltic States--Social life and customs--Congresses.
Enlightenment--Baltic States--Congresses.