Source: http://nuage.gleeze.com/public/Livres/__B__/Bussy,%20Charles%20de%20(Marchal%20Charles)%20-%20Dictionnaire%20universel%20de%20g%C3%A9ographie,%20indiquant%20les%20derniers%20changements%20de%20d%C3%A9limitation%20survenus%20en%20Europe%20(1860).pdf