Columbia subject headings:
Industrial hygiene--Law and legislation--Soviet Union.
Industrial safety--Law and legislation--Soviet Union.
Workers' compensation--Soviet Union.
Harvard subject headings:
Industrial hygiene--Law and legislation--Soviet Union.
Industrial safety--Law and legislation--Soviet Union
Workers' compensation--Soviet Union.
Princeton subject headings:
Industrial hygiene--Law and legislation--Soviet Union.
Industrial safety--Law and legislation--Soviet Union.
Workers' compensation--Soviet Union.