Columbia subject headings:
Metallurgy--Periodicals.
Metals--Periodicals.
Mineralogy--Periodicals.
Harvard subject headings:
Metallurgy--Periodicals.
Metals--Periodicals
Mineralogy--Periodicals
Princeton subject headings:
Materials--Periodicals.
Metallurgy--Periodicals.
Metals--Periodicals.
Minerals--Periodicals.
Periodicals.