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Overestimation of the prevalence of hypertension in the populationOH Klungel, JC Seidell, A Boer28/01/1999Journal Article
Nortestosterone: endogenous in urine of goats, sheep and maresS Sterk, H Herbold, M Blokland, H Rossum, L Ginkel, R Stephany28/01/1999Journal Article
Nitrogen, the Confer-N-s. First international nitrogen conference 1998, March 1998, Noordwijkerhout, the NetherlandsKW Hoek, JW Erisman, S Smeulders, JR Wisniewski, J Wisniewski, eds25/01/1999Journal Article
Nitrogen monitoring in groundwater in the sandy regions of the NetherlandsD Fraters, LJM Boumans, G Drecht, T Haan, WD Hoop25/01/1999Journal Article
Nitrate leaching in dairy farming: economic effects of environmental restrictionsR Groeneveld, AF Bouwman, S Kruitwagen, EC Ierland25/01/1999Journal Article