groundwater. ochrana vôd. podzemná voda. povrchová voda. protection. surface water. vodné zdroje. water resourcesKriš, Jozef, 1945- Groundwater quality and protection in the Slovak Republic. Hanková, Martina, 1984-. Brtko, Juraj, 1950- In: Instal. -- No. 3 (2013), s.54-60.