Literaturrecherche

Literatur Schuchardt F (1987) Composting of liquid manure and straw. In: Welte E, Szabolcs I (eds) Agricultural waste management and environmental protection : 4th International CIEC Symposium ; 1987, 11-14 May, Braunschweig, Federal Republic of Germany ; proceedings ; vol. 1. Göttingen: CIEC, pp 271-287

Literatur Sauerbeck D, Söchtig H (1987) Carl Sprengel : precursor of agricultural chemistry. In: Welte E, Szabolcs I (eds) Agricultural waste management and environmental protection : 4th International CIEC Symposium ; 1987, 11-14 May, Braunschweig, Federal Republic of Germany ; proceedings ; vol. 1. Göttingen: CIEC, pp 25-33