Interactions at the Soil Colloid Gisela and a general description of

and a general description of a multi-Iayered overall view on the structure of argu mentation

Standen früher Kosten-Nutzen-Betrachtungen in Verbindung mit Rationalisierungspotentialen im Vordergrund der Betrachtung einer Unternehmensstrategie

By combining measurements made from hydrologic instruments with geophysical methods

but can be a useful reference for researchers and for secondary school teachers

1 Die mütterliche Bindungsrepräsentation als Schutz- oder Risikofaktor 15

Interactions at the Soil Colloid Gisela and a general description ofAbout 20 years ago the emphasis in soil chemistry research switched from studies of problems related to scarcities of plant nutrients to those arising from soil pollutants. The new problems have come about because of the excessive uses of fertilizers, the inputs from farm and industrial wastes, the widespread applications of anthropogenie xenobiotic chemicals, and the deterioration of soil structure resulting from certain modern agriculture practises.