Columbia subject headings:
Alfonso XIII, King of Spain, 1886-1941--Assassination attempt, 1906--Fiction.
Madrid (Spain)--History--Fiction.
Morral Roca, Mateo, 1880-1906--Fiction.
Spain--History--Alfonso XIII, 1886-1931--Fiction.
Victoria Eugenia, Queen, consort of Alfonso XIII, King of Spain, 1887-1969--Assassination attempt, 1906--Fiction.
Harvard subject headings:
Alfonso XIII, King of Spain, 1886-1941--Assassination attempts--Fiction.
Princeton subject headings: