Ambiguous ambitions in the meuse theatre    
Aquatic Oligochaeta of the Netherlands and Belgium    
Calcareous mires of Slovakia    
De waterkevers van Nederland    
Desmids of the Lowlands    
European flora of the desmid genera Staurastrum and Staurodesmus    
Farewell to Ice
Flora of the blue-green algae of the Netherlands | 1    
Fotogids larven van libellen    
Inland drift sand landscapes    
Laten we 't eens over water hebben
Microclimate, vegetation & fauna    
Sloten    
Veldgids Slakken en mossels    
Weg van water