"Chaco Boreal (Paraguay and Bolivia)" . . "Waffenembargo." . . "United States" . . . . . . . "Facing the future" . . . . . . . . . . . "French peace plan" . . . . . . . . . "Isolation" . "The Chaco arms embargo" . . "The chaco arms embargo. : the French peace plan / William E. Richardson [u.a.]" . "The Chaco arms embargo"@en . "American committee in Geneva." . . "Chacokrieg." . . . .