400 Years Hortus Botanicus Leiden 1590-1990
30 Years Pendulum Forest - Harderwijk
Cranberry - Terschelling
Pine cone - Zundert
Pine cone - Boskoop
Leaf - Heerenveen
Floriad Amsterdam 1982
Palm tree - Cocos mats - Genemuiden
Leafs - Boskoop
Flowers - Edelweiss - Pine tree - Alpine meadow
