Columbia subject headings:
Silesia, Upper (Poland and Czech Republic)--Politics and government.
Sozialdemokratische Partei Deutschlands.
Harvard subject headings:
Silesia, Upper (Poland and Czech Republic)--Politics and government.
Sozialdemokratische Partei Deutschlands
Princeton subject headings:
Silesia, Upper (Poland and Czech Republic)--Politics and government.
Sozialdemokratische Partei Deutschlands.