Columbia subject headings:
Earth sciences--United States--Periodicals.
Environmental sciences--United States--Periodicals.
Geological Survey (U.S.)
Geology--Research--United States--Periodicals.
Mines and mineral resources--United States--Periodicals.
Natural disasters--United States--Periodicals.
Natural resources--United States--Periodicals.
Water resources development--United States--Periodicals.
Harvard subject headings:
Earth sciences--United States--Periodicals.
Environmental sciences--United States--Periodicals.
Geological Survey (U.S.)
Geology--Research--United States--Periodicals.
Mines and mineral resources--United States--Periodicals.
Natural disasters--United States--Periodicals.
Natural resources--United States--Periodicals.
Water resources development--United States--Periodicals.
Princeton subject headings: