Columbia subject headings:
Metallurgy--Handbooks, manuals, etc.
Metals--Handbooks, manuals, etc.
Harvard subject headings:
Metallurgy--Handbooks, manuals, etc.
Metals--Handbooks, manuals, etc.
Princeton subject headings:
Metallurgy--Handbooks, manuals, etc.
Metals--Handbooks, manuals, etc.