Columbia subject headings:
Foreign workers--Germany (West)
Foreign workers--Government policy--Germany (West)
Labor laws and legislation--Germany (West)
Harvard subject headings:
Foreign workers--Germany (West)
Foreign workers--Government policy--Germany (West)
Labor laws and legislation--Germany (West)
Princeton subject headings:
Foreign workers--Germany (West)
Foreign workers--Government policy--Germany (West).
Labor laws and legislation--Germany (West)