On the origin, evolution and distribution of Iberian groundwater Amphipoda (Crustacea)J Notenboom31/12/1989Journal Article
Development and evaluation of modern enzyme immunoassays for comprehensive syphilis serologyOE IJsselmuiden31/12/1989Journal Article
Alternatives to animal testing in Diphtheria and Tetanus research. Replacement, reduction and refinement in vaccine potency control and serologyCFM Hendriksen31/12/1989Journal Article