@book{2011eff121304418b05562b1d415deea,
title = "Numerical modelling of groundwater basins : a user-oriented manual",
keywords = "watervoerende lagen, waterkwaliteit, grondwater, waterbeheer, hydrologie, modellen, analogen, aquifers, water quality, groundwater, water management, hydrology, models, analogues",
author = "J. Boonstra and \{de Ridder\}, N.A.",
year = "1981",
language = "English",
isbn = "9789070260699",
series = "Publication International Institute for Land Reclamation and Improvement",
publisher = "ILRI",
number = "29",
address = "Netherlands",
}