Quaternary river terrace formation in the Allier basin, France : a reconstruction based on sand bulk geochemistry and 3-D modelling / A. VeldkampFertilité du sol / par Tom Veldkamp ; trad. [du néerlandais] par Evelyne CodazziSoil fertility / by Tom Veldkamp ; English transl. [from the Dutch] by Sara van OtterlooModelling land use changes and thier temporal and spatial variability with CLUEA; a pilot study for Costa Rica / A. Veldkamp, L.O. FrescoLandschap, bodemschap, vakmanschap: dynamiek in ruimte en tijd / A. VeldkampFrom white elephants to space elephants / A. VeldkampFrom white elephants to space elephants / A. VeldkampThe bioavailability of four zinc oxide sources and zinc sulphate in broiler chickens / T. Veldkamp, J.T.M. van Diepen, P. Bikker