Columbia subject headings:
Harvard subject headings:
Labor unions--Germany (West)--Officials and employees--Biography.
Sozialdemokratische Partei Deutschlands--Biography.
Wissell, Rudolf, 1869-1962.
Princeton subject headings:
Labor unions--Germany (West)--Officials and employees--Biography.
Sozialdemokratische Partei Deutschlands--Biography.
Wissell, Rudolf, 1869-1962.