William L. Langer

1896 – 1977

• European alliances and alignments, 1871-1890
• Political and social upheaval, 1832-1852
• The diplomacy of imperialism, 1890-1902
• Our Vichy gamble
• ENCYCLOPEDIA WORLD HIST
• The undeclared war, 1940-1941
• Enciclopedia de Historia Universal (1)
• The revolutions of 1848
• An Encyclopedia of World History
• An encyclopedia of world history
• An encyclopedia of world history, ancient, medieval, and modern, chronologically arranged
• Chonological Encyclopaedia of World History