Columbia subject headings:
Labor unions--Netherlands--Twente--History.
Nederlands Verbond van Vakverenigingen--History.
Twente (Netherlands)--History.
Working class--Netherlands--Twente--History.
World War, 1939-1945--Netherlands--Twente.
Harvard subject headings:
Labor unions--Netherlands--Twente--History--20th century.
Nederlands Verbond van Vakverenigingen--History--20th century.
Princeton subject headings:
Labor unions--Netherlands--Twente--History--20th century.
Nederlands Verbond van Vakverenigingen--History--20th century.