Columbia subject headings:
Harvard subject headings:
Botany, Economic--Spain--History--18th century.
Botany, Medical--Spain--History--18th century.
Botany--Government policy--Spain--History--18th century.
Botany--Spain--History--18th century.
Science and state--Spain--History--18th century.
Scientific expeditions--Spain--History--18th century.
Princeton subject headings:
Botanical gardens--Spain--History.
Botany, Medical--Spain--History.
Science and state--Spain--History.
Scientists--Spain.