Literaturrecherche

Literatur Haneklaus S, Schnug E, Paulsen HM, Hagel I (2005) Soil analysis for organic farming. Comm Soil Sci Plant Anal 36(1-3):65-79

Literatur Gassner A, Schnug E, Habib L (2005) A contribution to the estimation of organic phosphorous in soils. Comm Soil Sci Plant Anal 36(1-3):355-361