HeijGJ2025-03-122025-03-121989https://rivm.openrepository.com/handle/10029/632002Some trends in quality and protection of groundwater for public water supply.ArticleIn: Colenbrander HJ, Blumenthal KP, Cramer W, Volker A, Wesseling J, eds. Water in the Netherlands. The Hague: TNO Committee on Hydrological Research, 1989;67-702025-03-12