Columbia subject headings:
Industrial policy--Germany (West)
Trusts, Industrial--Germany (West)
Working class--Germany (West)
Harvard subject headings:
Industrial policy--Germany (West)
Labor and laboring classes--Germany (West)
Labor--Germany (West)
Trusts, Industrial--Germany (West)
Working class--Germany (West)
Princeton subject headings:
Industrial policy--Germany (West)
Labor--Germany (West)
Trusts, Industrial--Germany (West)