Columbia subject headings:
Harvard subject headings:
Bouble River Valley (France)--Buildings, structures, etc.
Flour mills--France--Bouble River Valley.--History.
Mills and mill-work--France--Bouble River Valley.
Water mills--France--Bouble River Valley.
Princeton subject headings:
Water mills--France--Allier (Dept.)--History.
Water mills--France--Puy-de-Dôme--History.