Methods for determining ochratoxin A and other nephrotoxic mycotoxinsHP Egmond05/01/1993Journal Article
The determination of free copper in freshwater using the MnO2-adsorption methodW Verweij12/01/1993Journal Article
Enkele recente ontwikkelingen in de epidemiologie van AIDS en HIV-infectiesH Houweling28/01/1993Journal Article
Technical progress and ecological awareness: towards international cooperation in environmental policyB Vries28/01/1993Journal Article