Columbia subject headings:
Art auctions--France--Paris--History--20th century.
Art, African--Marketing--History--20th century.
Drouot Boulogne (Firm)--History--20th century.
Harvard subject headings:
Princeton subject headings:
Art auctions--France--Paris--History--20th century.
Art, African--Marketing--History--20th century.
Drouot Boulogne (Firm)--History--20th century.