Progress in Soil Zoology

Ladies a n d g e n t 1 e m e n , I have the pleasure to welcome you here in Prague in the name of the Czechoslovak Academy of Sciences and to open the Fifth Inter­ national Colloquium on Soil Zoology. We are very glad that Czecho­ slovakia was chosen for this important meeting. It is clear to all of us that the soil plays and will play a de­ cisive part in providing food for the explosive increase...