Columbia subject headings:
Kalmykov, Andreĭ Dmitrievich, 1870-1941.
Russia--Foreign relations--1894-1917.
Harvard subject headings:
Diplomats--Russia--Biography
Kalmykov, Andreĭ Dmitrievich, 1870-1941
Russia--Foreign relations--1894-1917.
Princeton subject headings:
Kalmykov, Andreĭ Dmitrievich, 1870-1941.
Russia--Foreign relations--1894-1917.