Columbia subject headings:
Industrial hygiene--Law and legislation--Russia (Federation)
Industrial hygiene--Law and legislation--Soviet Union.
Industrial safety--Law and legislation--Russia (Federation)
Industrial safety--Law and legislation--Soviet Union.
Harvard subject headings:
Industrial hygiene--Law and legislation--Soviet Union.
Industrial safety--Law and legislation--Soviet Union
Princeton subject headings:
Industrial hygiene--Law and legislation--Soviet Union.
Industrial safety--Law and legislation--Soviet Union.