Bibliografia Foster, Edward Powell (1853-1937), Ro. Cincinnati: 1908 (8 str.) Foster, Edward P., Ro, an international language based on the classification of ideas. Cincinnati: The Ro Company, 1910 (39 str.) Foster, Edward P., Ru ro, outline of the universal language. Marietta, Ohio: World-Speech Press, 1913 (96 str.) Foster, Edward P., Dictionary of Ro the world language. Marietta, Ohio: World-Speech Press, 1919 (72 str.) Foster, Edward P., Roap, English key to Ro. Waverly, West Virginia: Ro Language Society, 1921 (32 str.) Foster, Edward P., Alphabet of ideas, or dictionary of Ro the world language. Waverly, West Virginia: Roia, 1928 (160 str.) PM 8751.F5 Foster, Edward P., Ro-Latin-English vocabularium dictionary. Waverly, West Virginia: Roia, 1931 PM 8751.F31 Foster, Edward P., English-Ro dictionary. Waverly: Ro Language Society, 1932 (64 str.)
Kategoria:Języki sztuczne