1 Xian dao li xian ji HORVAT, Joža Xian dao li xian ji / Joža Horvat. - [Wuchan] : Hubei essperanto asocio, 2006. - 8=581 HOR X
2 X-Men X-MEN X-Men / based on the novelization by Lara Bergen ; based on the screenplay by David Hayter ; [adapted by Paul Shipton]. - London : Scholastic, 2007. -(Scholastic Readers ; level 1) 8=111 X-MEN+CD
3 XML in Action PARDI, William J. XML in Action / William J. Pardi. - Washington : Microsoft Press, 1999. - 004.43=111 PAR X
4 XXLiving XXLIVING XXLiving / [editor Lizzie Gilbert-Frege ; project management Bettina Freeman et Nicole Weilnachev]. - Berlin : Feierbend, cop. 2003. - 7.05=111 XXL