EntityQ20477809· pop 14· linked from 6 articlesEsperanto DaySign in to save26th July; anniversary of the publication of Unua Libro, the first book describing EsperantoConnectionsEsperantoEntityEnglish languageConceptGermanEntityFrenchEntityRussianEntityWorld War IIConceptWarsawEntityWorld War IConceptPolishEntityCOVID-19 pandemicEntityInternational Standard Book NumberEntityInternational Mother Language DayEntityL. L. ZamenhofEntityconstructed languageEntityLibrary of Congress Control NumberEntityZamenhof DayEntityWorld Congress of EsperantoEntityUniversal Esperanto AssociationEntityFriendship DayEntityFundamento de EsperantoEntityCategoriesCommons link is the pagenameEsperanto cultureJuly observancesLanguage observances