One mosaic of the map sheet: 1. Géomorphologie. Scale of 1:100 000. Date of publication: 1981.

Results of mapping and geothermal potential assessment of the Dinantian limestones flanking the London Brabant Massif in the Netherlands and Flanders

One mosaic of the map sheet: 1. Réseaux hydrométrique et pluviométrique isohyètes interannuelles : période 1929-1978. Scale of 1:100 000. Date of publication: 1981.

This database contains botanical records either relating to material present in one of the Naturalis collections, or to material that has been or is being used in research projects. The records usually relate to herbarium specimens, but it also contains data on silica-gel samples, wood samples, spirit collections, carpological collections, etc.; rarely to observations only. The Naturalis collections have their strong points in The Netherlands and surrounding countries, Southeast Asia and New Guinea, West- and Central-Africa, Ethiopia and the Guyanas.