Columbia subject headings:
Hemp industry--History.
Hemp industry--Italy--Venice--History--16th century.
Hemp industry--Italy--Venice--History--17th century.
Harvard subject headings:
Hemp industry--History.
Hemp industry--Italy--Venice--History--16th century.
Hemp industry--Italy--Venice--History--17th century.
Princeton subject headings:
Hemp industry--History.
Hemp industry--Italy--Venice--History--16th century.
Hemp industry--Italy--Venice--History--17th century.