Columbia subject headings:
France--History--Henry IV, 1589-1610.
France--Kings and rulers--Biography.
Henry IV, King of France, 1553-1610--Assassination.
Harvard subject headings:
France--History--Henry IV, 1589-1610.
Henry IV, King of France, 1553-1610--Assassination.
Ravaillac, François, 1578-1610.
Princeton subject headings:
France--History--Henry IV, 1589-1610.
Henry IV, King of France, 1553-1610--Assassination.
Ravaillac, François, 1578-1610.