Columbia subject headings:
Harvard subject headings:
International Institute of Social History--Archives--Catalogs.
Labor movement--Netherlands--History--Manuscripts--Catalogs.
Netherlands--History--Sources--Bibliography--Catalogs.
Netherlands--Social conditions--Manuscripts--Catalogs.
Political parties--Netherlands--History--Manuscripts--Catalogs.
Princeton subject headings:
International Institute for Social History--Archives--Catalogs.
Labor--Netherlands--History--Manuscripts--Catalogs.
Netherlands--History--Sources--Bibliography--Catalogs.
Netherlands--Social conditions--Manuscripts--Catalogs.
Political parties--Netherlands--History--Manuscripts--Catalogs.