Two papers on international language in English and Ido
JESPERSEN, OTTO. Two papers on international language in English and Ido [=omslagstitel]. London, 1921. Second edition. 44 s. Klammerhäftad.
Omslaget obetydligt nött.
Historio di nia Lingu/ History of our Language and Artificala Lingui pos la Mondmilito/ Artificial Languages after the World War.
