Columbia subject headings:
Associations, institutions, etc.--Law and legislation--Europe, Eastern.
Associations, institutions, etc.--Law and legislation--Soviet Union.
Harvard subject headings:
Associations, institutions, etc.--Law and legislation--Europe, Eastern.
Associations, institutions, etc.--Law and legislation--Soviet Union.
Princeton subject headings:
Associations, institutions, etc.--Bulgaria.
Associations, institutions, etc.--Germany (East).
Associations, institutions, etc.--Soviet Union.
Communism and society.