Columbia subject headings:
Harvard subject headings:
Belarus--Historical geography.
Europe, Eastern--Ethnic relations--History.
Europe, Eastern--Historical geography.
Europe, Eastern--Population--History.
Latvia--Historical geography.
Lithuania--Historical geography.
Poland--Historical geography.
Poland--History--19th century
Poland--History--20th century
Population transfers--Polish people.
Ukraine--Historical geography.
World War, 1939-1945--Territorial questions--Europe, Eastern.
World War, 1939-1945--Territorial questions--Poland.
Princeton subject headings:
Poland--History--19th century.
Poland--History--20th century.
Strzembosz, Tomasz.