Columbia subject headings:
Environmental policy--Former Soviet republics.
Environmental policy--Soviet Union--History.
Environmental protection--Former Soviet republics.
Environmental protection--Soviet Union--History.
Harvard subject headings:
Environmental policy--Former Soviet Republics.
Environmental policy--Soviet Union--History.
Environmental protection--Former Soviet Republics.
Environmental protection--Soviet Union--History.
Princeton subject headings:
Environmental policy--Former Soviet Republics.
Environmental policy--Soviet Union--History.
Environmental protection--Former Soviet Republics.
Environmental protection--Soviet Union--History.