- X, Y, Z. Prawdziwa historia złamania szyfru Enigmy
- X-Ray Vision
- X. opuscula politica equestria et venatica: cum Arriani libello de venatione ... Recensuit et interp...
- Xanadu
- Xanten
- Xanthippe - Die Frau des Sokrates
- Xanthippe - Die Frau des Sokrates & Die ehrlose Herzogin
- Xavier Coppolani Fils de Corse, Homme d'Afrique
- Xátiva. Memorias, recuerdos y tradiciones de esta antigua ciudad.
- XBX Plan for Physical Fitness
- Xenia
- Xenophon's Anabasis, or The Expedition of Cyrus
- Xenophon's Anabasis: Lessons in Leadership - Fresh Perspective on Military Leadership By Reevaluatin...
- Xenophon's History of the Affairs of Greece by the translator of Thucydides i.e. W. Smith
- Xenophon's History of the Affairs of Greece by the translator of Thucydides i.e. W. Smith
- Xenophon's Other Voice
- Xeque-mate a Goa
- Xerocampos
- Xerxes
- Xerxes Invades Greece
- Xerxes Makers of History
- Xi Jinping Der mächtigste Vorsitzende nach Mao Zedong
- Xi Jinping og det nye Kina
- Xia Dynasty
- XII Corps, Spearhead of Patton’s Third Army pt. I
- XII Corps, Spearhead of Patton’s Third Army pt. II
- Xin Loi, Viet Nam
- Xipe Totec. Notre Seigneur l’Écorché
- XIX Tactical Air Command and Ultra - Patton’s Force Enhancers in the 1944 Campaign in France
- XIX Всесоюзная конференция КПСС (28 июня – 1 июля 1988 года). Замысел политической реформы в СССР
- XLI. Geo. III. c. 40.] An Act for paving ... and regulating the streets ... and ... public ... place...
- Xtabay
- Xuxub Must Die
- XX
- XX settembre 1870: “Roma tutta appartiene agli italiani”
- XX век как жизнь. Воспоминания
- XXth Century Sheet Metal Worker - A Modern Treatise on Modern Sheet Metal Work
- Xénophon - Oeuvres Complètes
- Xénophon - Oeuvres complètes
- Xénophon et les grâces du pouvoir