Columbia subject headings:
Harvard subject headings:
Catholic labor unions--Netherlands--History.
Nederlands Katholiek Vakverbond--History.
Nederlandse Katholieke Arbeidersbeweging--History.
Netherlands--Economic conditions--1945-
Netherlands--Social conditions--1945-
Princeton subject headings:
Catholic labor unions--Netherlands--History.
Nederlands Katholiek Vakverbond--History.
Nederlandse Katholieke Arbeidersbeweging--History.
Netherlands--Economic conditions--1945-
Netherlands--Social conditions--1945-