Columbia subject headings:
Harvard subject headings:
Coudenhove-Kalergi, Heinrich Johann Maria, Graf von, 1859-1906.
Coudenhove-Kalergi, Mitsuko, 1874-1941.
Diplomats' spouses--Europe--Biography.
Japanese--Europe--Biography.
Princeton subject headings:
Coudenhove-Kalergi, Mitsuko, 1874-1941.
Countesses--Austria--Biography.
Japanese--Austria--Biography.