Columbia subject headings:
Harvard subject headings:
Chemistry--Brazil--History.
Chemistry--Portugal--History.
Princeton subject headings:
Chemistry--Study and teaching (Higher)--Brazil--History--18th century.
Chemistry--Study and teaching (Higher)--Brazil--History--19th century.
Chemistry--Study and teaching (Higher)--Portugal--History--18th century.
Chemistry--Study and teaching (Higher)--Portugal--History--19th century.