Columbia subject headings:
Harvard subject headings:
Astronomical observatories--Russia (Federation)--Pulkovo--History.
Astronomy--Soviet Union--History.
Glavnai︠a︡ astronomicheskai︠a︡ observatorii︠a︡ (Soviet Union)--Anniversaries, etc.
Glavnai︠a︡ astronomicheskai︠a︡ observatorii︠a︡ (Soviet Union)--History.
Princeton subject headings:
Astronomical observatories--Russia (Federation)--Pulkovo--History.
Glavnai︠a︡ astronomicheskai︠a︡ observatorii︠a︡ (Soviet Union)--History.