14/03/2015 -> 29/03/2015 : 2014 Walloon Water Days (WALLONIE)

Read more http://www.opt.be/informations/events-wallonie-2014-walloon-water-days/en/E/32523.html
Read more http://www.opt.be/informations/events-wallonie-2014-walloon-water-days/en/E/32523.html