| Xe Congrès international d'hygiène et de démographie a Paris en 1900 - 1900 - 1070 pages |
| Xenia Czernoviciensia by Chernovtsy. Gymnasium, Emil Sigall, Cernauti. Universitate. Festschrift - 1900 - 93 pages |
| Xenia, or, The immediate effect of pollen in maize by Herbert John Webber - 1900 - 44 pages |
| Xenophon by Edmund Lange - 1900 - 88 pages |
| Xenophon de vectigalibus V, 9, und die Überlieferung vom Anfang des phokischen Krieges bei Diodor by Aemilius Pintschovius - 1900 - 31 pages |
| Xenophon de vectigalibus V,9 und die überlieferung vom anfang des phokischen krieges bei Diodor by Aemilius Pintschovius - 1900 - 31 pages |
| Xenophons Anabasis als grundlage des griechischen elementarunterrichts by A. Kuthe - 1900 - 39 pages |
| Xenophontis scripta minora by Xenophon - 1900 |
| Xenophontis Scripta minora by Xenophon, Ludwig August Dindorf - 1900 |
| Xenophōntos Syngrammata ek diorthōseōs kai hermēneias Iōannou Pantazidou by Xenophon - 1900 - 646 pages |
| Xerxes by Jacob Abbott - 1900 - 302 pages |
| Xiang dong zhen yan by Yingjue Li - 1900 - 132 pages |
| Xiangqi lou shi ji by Kaiyu Wang - 1900 |
| Xiangqi lou shi ji by Kaiyu Wang - 1900 |
| Xiangqi lou shi ji by Kaiyu Wang - 1900 |
| Xiangqi lou shi ji by Kaiyu Wang - 1900 |
| Xiangqi lou wen ji by Kaiyun Wang - 1900 |
| Xiangqi lou wen ji by Kaiyun Wang - 1900 |
| Xiangqi lou wen ji by Kaiyun Wang - 1900 |
| Xiangqi lou wen ji by Kaiyun Wang - 1900 |
| XIIIe Congres international de medecine - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| XIIIe Congrès international de médecine, Paris, 1900 - 1900 - 402 pages |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| xiiie congrès international de médecine, Paris, 1900 - 1900 |
| XLIX English hymns rendered in Latin rhyme by William Garden Blaikie - 1900 - 119 pages |
| Xu shou tang wen ji by Xianqian Wang - 1900 |
| Xu shou tang wen ji by Xianqian Wang - 1900 |
| Xu shou tang wen ji by Xianqian Wang - 1900 |
| XVII Motetten zu vier und fünf Stimmen by Gallus Dressler, Anton Halm, Robert Eitner - 1900 - 115 pages |
| XVIIe et XVIIIe slècles by Louis Bertrand - 1900 |
| XXIV [i.e. Vierundzwanzig] variirte Choräle by Georg Philipp Telemann - 1900 |
| XXIV Quatrains from Omar by Omar Khayyam - 1900 - 24 pages |