Columbia subject headings:
Agriculture--France--Early works to 1800.
Agriculture--Spain--Early works to 1800.
France--Description and travel--Early works to 1800.
Italy--Description and travel--Early works to 1800.
Spain--Description and travel--Early works to 1800.
Harvard subject headings:
Princeton subject headings:
Agriculture--France--Early works to 1800.
Agriculture--Spain--Early works to 1800.
France--Description and travel--Early works to 1800.
Italy--Description and travel--Early works to 1800.
Spain--Description and travel--Early works to 1800.