Columbia subject headings:
International Labour Conference (1st : 1919 : Washington, D.C.)
International Labour Office.
International Labour Organisation.
Labor laws and legislation.
Harvard subject headings:
International Labour Conference (1st : 1919 : Washington, D.C.)
International Labour Office
International Labour Organisation
Labor laws and legislation
Princeton subject headings:
International Labour Conference (1st : 1919 : Washington, D.C.)
International Labour Office.
Labor laws and legislation.