131. La internacia informlibro. Enfield : War Resisters' International, [between 1950 and 1959?] Book Online Power to the People! Counterculture, Social Movements, & Alternative Press, 1960-2015
132. Veni sancte spiritus- veni creator spiritus / by Heinrich Finck. Finck, Heinrich, 1444 or 5-1527 [Browse] [Cambridge, MA] : Harvard University Press, 1950. Musical score Online Music Online: Classical Scores Library, Volume 1
133. Victimae paschali laudes / Anonymous. [Cambridge, MA] : Harvard University Press, 1950. Musical score Online Music Online: Classical Scores Library, Volume 1
134. Victimae paschali laudes / by Adrian Willaert. Willaert, Adrian, 1490?-1562 [Browse] [Cambridge, MA] : Harvard University Press, 1950. Musical score Online Music Online: Classical Scores Library, Volume 1
135. Meetkundige beschouwingen over bewegingen in een Euclidische ruimte / door Cornelis Petrus Stephanus van Oosten. Oosten, Cornelis Petrus Stephanus van [Browse] Groningen : P. Noordhoff, 1951. Book ReCAP - Remote Storage » KF 13270
136. Alaska stafeto : kaj Kaptitoj de la glacirokoj / František Omelka. Omelka, František [Browse] Rickmansworth : Esperanto Pub. Co., 1952. Book Online Project Gutenberg Online Catalog
137. El Popola Ĉinio. 中國報道. El Popola Ĉinio. Zhongguo bao dao. [Pekino] : [Ĉina Esperanto Ligo, etc.], 1952-2001. Journal Loading...ReCAP - Remote Storage » DS777.55 .J3617
138. Historio de S.A.T., 1921 1952. Sennacieca Asocio Tutmonda [Browse] Paris, 1953. Book Loading...ReCAP - Remote Storage » PM8209.S46 H47 1953
139. Czechoslovakia : Cultural exchanges between Czechoslovakia and UK (FO371-122202). Abingdon, England : Taylor and Francis, 2017.London : Foreign Office, 1956. Book Online History Commons: Cold War Eastern Europe
140. Petro : kursa lernolibro por laboristoj. Sennacieca Asocio Tutmonda [Browse] Paris : S. A. T., 1956. Book Loading...ReCAP - Remote Storage » PM8213 .P48 1956