Columbia subject headings:
Drawing, European--Exhibitions.
Gosudarstvennyĭ Ėrmitazh (Russia)--Exhibitions.
Harvard subject headings:
Drawing, European--Exhibitions.
Gosudarstvennyĭ Ėrmitazh (Russia)--Exhibitions.
Princeton subject headings:
Drawing, European--Exhibitions.
Drawing--Russia (Federation)--Saint Petersburg--Exhibitions.
Gosudarstvennyĭ Ėrmitazh (Russia)--Exhibitions.