Columbia subject headings:
Associations, institutions, etc.--Histoiography.
Associations, institutions, etc.--History--20th century.
Business enterprises--History--20th century.
Harvard subject headings:
Associations, institutions, etc.--Germany--History--20th century.
Associations, institutions, etc.--Historiography.
Associations, institutions, etc.--History--20th century.
Social groups--History--20th century.
Princeton subject headings:
Associations, institutions, etc.--Historiography.
Associations, institutions, etc.--History--20th century.
Business enterprises--History--20th century.