Columbia subject headings:
Scientific apparatus and instruments--France--History--18th century.
Harvard subject headings:
La Rochefoucauld d'Enville, Louis-Alexandre, duc de, 1743-1792--Knowledge--Science.
Scientific apparatus and instruments--France--History--18th century.
Princeton subject headings:
La Rochefoucauld d'Enville, Louis-Alexandre, duc de, 1743-1792--Knowledge--Science.
Scientific apparatus and instruments--France--History--18th century.