Columbia subject headings:
Geophysics--Periodicals.
Prospecting--Geophysical methods--Periodicals.
Prospecting--Periodicals.
Harvard subject headings:
Geophysics--Periodicals
Prospecting--Geophysical methods--Periodicals
Prospecting--Periodicals.
Princeton subject headings:
Geophysics--Periodicals.
Periodicals.
Prospecting--Geophysical methods--Periodicals.
Prospecting--Periodicals.