Columbia subject headings:
Liberty of contract--Germany (West)
Liberty of contract--United States.
Standardized terms of contract--Germany (West)
Standardized terms of contract--United States.
Harvard subject headings:
Liberty of contract--Germany (West)
Liberty of contract--United States.
Standardized terms of contract--Germany (West)
Standardized terms of contract--United States.
Princeton subject headings:
Liberty of contract--Germany (West)
Liberty of contract--United States.
Standardized terms of contract--Germany (West)
Standardized terms of contract--United States.