1.
Frans Florschütz as founding father of pollen analysis in the Netherlands, and expansion of palynology into the tropics
Airborne pollen concentration in Leiden, the Netherlands, 1977–1981 ; I. Trees and shrubs flowering in the spring
Airborne Pollen Concentrations in Leiden, The Netherlands, 1977–1981 ; III. Herbs and Weeds Flowering in the Summer
Prediction of the start of the grass pollen season for the western part of the Netherlands
The saprophagous macrofauna of different types of humus in beech forests of the Ardenne (Belgium)
Effects of spruce plantations on carabid beetles in southern Belgium
Habitat selection of carabid beetle in deciduous woodlands of southern Belgium