Columbia subject headings:
Alloys--China.
Alloys--Great Britain--History--18th century.
Nickel alloys--History.
Harvard subject headings:
Alloys--China.
Alloys--Great Britain--History--18th century.
Nickel alloys--History.
Paktong--England--History--18th century.
Princeton subject headings:
Alloys--China.
Alloys--Great Britain--History--18th century.
Art metal-work--Europe--History.
Nickel alloys--History.