Columbia subject headings:
Harvard subject headings:
Chile--Climate--Statistics--Periodicals.
Chile--Statistics--Periodicals.
Environmental monitoring--Chile--Statistics--Periodicals.
Environmental protection--Chile--Statistics--Periodicals.
Pollution--Chile--Statistics--Periodicals.
Princeton subject headings:
Chile--Climate--Statistics--Periodicals.
Chile--Environmental conditions--Statistics--Periodicals.
Environmental monitoring--Chile--Statistics--Periodicals.
Environmental protection--Chile--Statistics--Periodicals.
Periodicals.
Pollution--Environmental aspects--Chile--Statistics--Periodicals.
Statistics.