Literaturrecherche

Literatur Flaig W (1975) Specific effects or soil organic matter on the potential of soil productivity : 1, Biochemistry of soil organic matter. FAO Soils Bull 27:31-81

Literatur Salfeld J-C, Söchtig H (1975) Proposals for the characterization of soil organic matter as an approach to understands in dynamics. FAO Soils Bull 27:71-81

Literatur Tietjen C (1975) Principle problems of the use of city wastes for crop production and soil conservation. FAO Soils Bull 27:211-226