Columbia subject headings:
Harvard subject headings:
Coal--Geology--Early works to 1800.
Dyes and dyeing--Early works to 1800.
Metallurgy--Early works to 1800.
Prospecting--Early works to 1800.
Princeton subject headings:
Chemistry--Early works to 1800.
Metallurgy--Early works to 1800.
Mineralogy--Early works to 1800.