The Monroe doctrine : Its modern significance - Dozer, Donald Marquand; Welles, Sumner; Bingham, Hiram; United States. State Department; Dulles, John Foster; Sáenz Peña, Roque, 1851-1914; Quintanilla, Luis; Root, Elihu; Ingenieros, José; Barreda y Laos, Felipe; Hughes, Charles Evans; Alvarez, Alejandro; et al. (Borzoi books on Latin America, 1967)