- de Volapuko, André Cherpillod. Courgenard, 1995. Schmidt, Johann. 1964.
Jenotem valemapüka Volapük. Amsterdam: Volapükagased. Schmidt, Johann. 1996. Historio...
- is also on the
board of the
Academy as a deputy. Schmidt, Johann. 1964.
Jenotem valemapüka Volapük. Amsterdam: Volapükagased. Schmidt, Johann. 1996. Historio...