Columbia subject headings:
Harvard subject headings:
Germans--Poland--History
Immigrants--Poland--History.
Minorities--Poland--History.
Poland--Emigration and immigration
Sarmatians--Europe, Eastern--History.
Princeton subject headings:
Germans--Poland--History.
Immigrants--Poland--History.
Minorities--Poland--History.
Poland--Emigration and immigration.
Sarmatians--Europe, Eastern--History.