International picture language : the first rules of Isotype / by Otto Neurath ... with Isotype pictures. Picture language. Isotype. Neurath, Otto, 1882-1945. Isotype (Picture language) Language, Universal. Pasigraphy. 408.9 NEI Text in Basic English. "Writings on Isotype by Otto Neurath and his institutes" p. 116-117. London : K. Paul, Trench, Trubner & co., ltd., 1936. 1936. 1936 Text 117 p. : eng Psyche miniatures. General series. no. 83