Unua Libro
{{Infobox book
| italic title   =
| name           = Unua Libro
| image          = Dr. Esperanto's International Language cover page.jpg
| image_size     =
| alt            =
| caption        = ''Dr. Esperanto's International Language''<br />(1889 Geoghegan translation)
| author         = [[L. L. Zamenhof]]
| audio_read_by  = [http://librivox.org/dr-esperantos-international-language-introduction-and-complete-grammar-by-ll-zamenhof/ Nicholas James Bridgewater] ([[LibriVox]])
| title_orig     = Международный языкъ
| orig_lang_code = ru
| title_working  =
| translator     = Julian Steinhaus (1888)<br />[[Richard H. Geoghegan|Richard Geoghegan]] (1889)<br />Henry Phillips Jr. (1889)
| illustrator    =
| cover_artist   =
| country        =
| language       = [[Russian language|Russian]], [[Esperanto]]
| series         =
| release_number =
| subject        = [[Esperanto]], [[international auxiliary language]]
| genre          =
| set_in         =
| publisher      = Chaim Kelter
| publisher2     =
| pub_date       = {{OldStyleDate|July 26|1887|July 14}}
| english_pub_date =
| published      = [[Warsaw]], [[Congress Poland]], [[Russian Empire]]
| media_type     =
| pages          = 42
| awards         =
| isbn           =
| isbn_note      =
| oclc           =
| dewey          =
| congress       =
| preceded_by    =
| followed_by    = [[Dua Libro]]
| native_wikisource = Международный язык (Заменгоф)
| wikisource     =  Dr. Esperanto's International Language
| notes          =
| exclude_cover  =
| website        =
}}
An '''''Dr. Esperanto's International Language''''' ({{lang-ru|[[wikt:международный#Russian|Международный]] [[wikt:язык#Russian|язык]]}}), komun na pigpapanongdan bilang  [[Esperanto]]: ''Unua Libro'' (''Enot na Libro''), iyo an sarong 1887 na libro kan optalmologing Polako na si [[L. L. Zamenhof]], na kun saen enot niyang ipinamidbid asin ilinadawan an [[constructed language]] na [[Esperanto]].<ref name="natgeo">{{cite web|url=http://www.nationalgeographic.org/thisday/jul26/unua-libro-en-esperanto-first-book-esperanto/|title=1887: Unua Libro en Esperanto (First Book in Esperanto)|website=NationalGeographic.org|access-date=October 19, 2017|archive-url=https://web.archive.org/web/20171020135352/https://www.nationalgeographic.org/thisday/jul26/unua-libro-en-esperanto-first-book-esperanto/|archive-date=October 20, 2017|url-status=dead}}</ref> Enot na pinublikar sa Ruso kaidtong {{OldStyleDate|July 26|1887|July 14}}, an publikasyon kan ''Unua Libro'' minarkahan an pormal na kapinonan kan [[hiroan kan Esperanto]].<ref name="natgeo" />

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An Dr. Esperanto's International Language (), komun na pigpapanongdan bilang  Esperanto: Unua Libro (Enot na Libro), iyo an sarong 1887 na libro kan optalmologing Polako na si L. L. Zamenhof, na kun saen enot niyang ipinamidbid asin ilinadawan an constructed language na Esperanto. Enot na pinublikar sa Ruso kaidtong , an publikasyon kan Unua Libro minarkahan an pormal na kapinonan kan hiroan kan Esperanto.

Toltolan