241. Language in the twenty-first century : selected papers of the millenial conferences of the Center for Research and Documentation on World Language Problems, held at the University of Hartford and Yale University / edited by Humphrey Tonkin, Timothy Reagan. Tonkin, Humphrey Amsterdam ; Philadelphia : J. Benjamins, c2003. Book Online
242. Minority languages and group identity : cases and categories / John Edwards. Edwards, John, 1947 December 3- Amsterdam ; Philadelphia : John Benjamins Pub. Co., c2010. Book Online
243. Status change of languages / edited by Ulrich Ammon and Marlis Hellinger. Berlin ; New York : W. de Gruyter, 1992.©1991 Book Online
244. Arguing about justice : essays for Philippe Van Parijs / Axel Gosseries & Yannick Vanderborght, eds. Axel Gosseries, Philippe Vanderborght (dir.) Presses universitaires de Louvain 2011Louvain : Presses Universitaires de Louvain, [2011]©2011 Book Online
245. Esperanto, een taal om van te houden / door Wim Jansen. Jansen, Wim Amsterdam : Vossiuspers UvA/Amsterdam University Press, 2009. Book Online
246. Brutorum actiones non possunt solvi per leges merè mechanicas [electronic resource]. University of Cambridge [Cambridge : s.n., 1703] Book Online
247. La ciklo de akvo / Stefanie Nemo [and four others]. Nemo, Stefanie [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, [2013?] Visual material Online
248. La koro sutro [electronic resource] / Lou Harrison. Harrison, Lou, 1917-2003 San Francisco, Calif. : New Albion Records, p1988. Audio Online
249. Esperanto and its rivals [electronic resource] : the struggle for an international language / Roberto Garvia. Garvía, Roberto Philadelphia : University of Pennsylvania Press, [2015]. Book Online
252. From Elvish to Klingon : exploring invented languages / Michael Adams. Adams, Michael Oxford : Oxford University Press, 2011. Book Online
253. Sexual Reform Congress, Copenhagen, 1.-5., VII, 1928 : proceedings of the Second Congress = Bericht des Zweiten Kongresses = Compte rendu du deuxième Congrés = Dokumentaro de la dua Kongreso / W.L.S.R. World League for Sexual Reform = Weltliga Für Sexualreform = Ligue Mondiale pour la Réforme Sexuelle = Tutmonda ligo por Seksaj Reformoj ; redaktion: Dr. Hertha Riese, Dr. J.H. Leunbach. Sexual Reform Congress (2nd : 1928 : Copenhagen, Denmark) Copenhagen : Levin and Munksgaard ; Leipzig : Georg Thieme Verlag, 1929. Book Online
254. Microbial evolution and co-adaptation [electronic resource] : a tribute to the life and scientific legacies of Joshua Lederberg : workshop summary / rapporteurs, David A. Relman ... [et al.] ; Forum on Microbial Threats, Board on Global Health, Institute of Medicine of the National Academies. Washington, D.C. : National Academies Press, c2009. Book Online
255. La leprulo de l'urbo de Aosto / Xavier de Maistre ; Esperantigis: Mario de Assis Moura, abituriento de Leĝoscienco per la Leĝoscienca Akademio de S. Paulo (Brazilujo), ano efektiva de l'Grupo Esperantista Suda Stelaro de Campinas. Maistre, Xavier de, 1763-1852 Rio de Janeiro : Livraria Cruz Coutinho, Jacintho Ribeiro dos Santos, editor, 1908. Book Online
256. Vox sola : music for solo voice / Lorna Windsor. [Leeuwarden, Netherlands] : Brilliant Classics, [2018]℗2018 Audio Online
257. Renovigo [electronic resource] : esperanto fako de Renobasión. Meksiko : Editorial Lumen Journal Online
258. Renobasión [electronic resource] : editado por el Sentro Neográfico. Mexico D.F. : Editorial Lumen, [1934]- Journal Online
259. Concertos [electronic resource] / Laurent Petitgirard. Petitgirard, Laurent [Hong Kong] : Naxos, p2007. Audio Online
260. The music of the Royal Swedish Navy / the Royal Swedish Navy Band = Marinens Musikkår. [Place of publication not identified] : MPR, [2016?] Audio Online