Columbia subject headings:
Harvard subject headings:
Forest management--Cuba--History--19th century.
Forest management--Philippines--History--19th century.
Forest management--Puerto Rico--History--19th century.
Forest policy--Spain--History--19th century.
Princeton subject headings:
Forest management--Cuba--History--19th century.
Forest management--Philippines--History--19th century.
Forest management--Puerto Rico--History--19th century.
Forest policy--Spain--History--19th century.