Ook verschenen in handelsed.: Utrecht : Koninklijk Nederlands Aardrijkskundig Genootschap ; Utrecht : Faculteit Ruimtelijke Wetenschappen, Universiteit Utrecht, 1993. - (Nederlandse geografische studies, ISSN 0169-4839 ; 157)
Modelling surface runoff and soil erosion in catchments using geographical information systems : validity and applicability of the 'answers' model in two catchments in the loess area of South Limburg (The Netherlands) and one in Devon (UK)
Modelling surface runoff and soil erosion in catchments using geographical information systems : validity and applicability of the 'answers' model in two catchments in the loess area of South Limburg (The Netherlands) and one in Devon (UK) / Arie Peter Johan de Roo