Columbia subject headings:
Geology--Periodicals.
Geology--Peru--Periodicals.
Sociedad Geológica del Perú--Periodicals.
Harvard subject headings:
Geology--Periodicals
Geology--Peru--Periodicals.
Sociedad Geológica del Perú--Periodicals.
Princeton subject headings:
Geology--Periodicals.
Geology--Peru--Periodicals.
Periodicals.
Sociedad Geológica del Perú--Periodicals.