Leon Bollack
From International Auxiliary Languages
- Bollack, L., La Langue Bleue Bolak, langue internationale pratique, Paris: 1899, 480+ pp.
- Bollack, L., Premier vocabulaire de la langue bleue Bolak, Paris: 1902, 90+ pp.
- Bollack, L., [tra. Tischer], Abridged grammar of the Blue Language, Paris: Pres. Dupont, 1900, 64 pp.
