Columbia subject headings:
Harvard subject headings:
Gkioumousnkerdanēs, Michalakēs.
Greeks--Bulgaria--History--Sources.
Greeks--Eastern Rumelia--History--Sources.
Greeks--Pontus--History--Sources.
Greeks--Thrace--History--Sources.
Princeton subject headings:
Bulgaria--Ethnic relations--History.
Bulgaria--Relations--Greece--History.
Gkioumousnkerdanēs family--Archival resources.
Gkioumousnkerdanēs, Michalakēs.
Greeks--Bulgaria--History--Sources.