- Aliaj Tempoj (CD-ROM Edition of 1999 Esperanto Language Fiction) by Edith Wharton, 2009
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- The Esperanto teacher: A text-book of the international language with special emphasis on the needs of the nongrammarian and the home-student by Mason Stuttard, 1989
- ELNA newsletter; news of the language problem and esperanto as a solution: 19 issues (with added ephemera) by Harold R., William R. Harmon, Catherine L. Schulze (editors) Dreyer, 1981
- Agglutinative Languages: Japanese Language, Esperanto, Dravidian Languages, Basque Language, Korean Language, Hungarian Language
- Esperanto Grammar: Esperanto, Constructed language, International auxiliary language, Gaston Waringhien, Kálmán Kalocsay, Bertilo Wennergren, Esperanto ... in Esperanto, Esperanto vocabulary
- Practical Grammar Of The International Language: Esperanto (1915) by Ivy Kellerman Reed, 2010-09-10
- Practical Grammar Of The International Language: Esperanto (1915) by Ivy Kellerman Reed, 2010-09-10
- Secondary School Esperanto: Bk. 1 by Raif Hubert Marker Markarian, J.H. Sullivan, 1972-05
- Marie Mullarney Argues About Language by Marie Mullarney, 2007-01-30
- Being Colloquial in Esperanto by David K. Jordan, 1992-07
- Teach Yourself Esperanto (Teach Yourself Books) by John Cresswell, John Hartley, 1959
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