Columbia subject headings:
Silver industry--Periodicals.
Silver industry--Statistics--Periodicals.
Silver--Periodicals.
Silver--Statistics--Periodicals.
Harvard subject headings:
Silver industry--Periodicals.
Silver industry--Statistics--Periodicals.
Silver--Periodicals.
Silver--Statistics--Periodicals.
Princeton subject headings:
Periodicals.
Silver industry--Periodicals.
Silver industry--Statistics--Periodicals.
Silver--Periodicals.
Silver--Statistics--Periodicals.