- waterbeheersing
- water control
Deutsch-Englisch-Wasserbau. 2015.
Deutsch-Englisch-Wasserbau. 2015.
Polder — A polder is a low lying tract of land enclosed by embankments known as dikes, that forms an artificial hydrological entity, meaning it has no connection with outside water other than through man operated devices. There are three types of polders … Wikipedia
George Arnold Escher — Naissance 10 mai 1843 … Wikipédia en Français