Columbia subject headings:
Environmental policy--Italy--History.
Italy--Historical geography.
Nature--Effect of human beings on--Russia--History.
Regional planning--Italy--History.
Harvard subject headings:
Italy--Historical geography.
Russia--Description and travel.
Travelers--Russia--History.
Travelers--Russia.
Princeton subject headings:
Environmental policy--Italy--History.
Italy--Historical geography.
Nature--Effect of human beings on--Russia--History.
Regional planning--Italy--History.