Columbia subject headings:
Research--Law and legislation--Soviet Union.
Research--Soviet Union--Societies, etc.
Scientists--Legal status, laws, etc.--Soviet Union.
Harvard subject headings:
Research--Law and legislation--Soviet Union.
Research--Soviet Union--Societies, etc.
Scientists--Legal status, laws, etc.--Soviet Union.
Princeton subject headings:
Research--Law and legislation--Soviet Union.
Research--Soviet Union--Societies, etc.
Scientists--Legal status, laws, etc.--Soviet Union.