Armgaard Karl Graves

• The Secrets of the German War Office
• The Secrets of the German War Office
• The secrets of the Hohenzollerns
• The secrets of the Hohenzollerns
• Khwāmlap khō̜ng Krom Sư̄p Khāo Yœ̄raman
• Secret of the German War Office
• Secrets of the German War Office (Wwi Centenary Series)
• Souvenirs d'un agent secret de l'Allemagne
• The German war machine
• The secrets of the German war office