Columbia subject headings:
Dye industry--Egypt--History.
Dye plants--Egypt.
Dyes and dyeing--Chemistry.
Ink--History.
Writing materials and instruments--History.
Harvard subject headings:
Dye industry--Egypt--History.
Dye plants--Egypt.
Dyes and dyeing--Chemistry
Ink--History.
Writing--Materials and instruments--History.
Princeton subject headings:
Dyes and dyeing--Egypt--History.
Ink--History.