Die schwierige Kunst des Kopierens
Fussnoten
1
Iswaran, V. et al.: Effect of Charcoal, Coal and Peat on the Yield of Moong, Soybean and Pea. In: Soil Biology and Biochemistry 12 (1980), S. 191-192.
2
Steiner, Christoph et al.: Long Term Effects of Manure, Charcoal and Mineral Fertilization on Crop Production and Fertility on a Highly Weathered Central Amazonian Upland Soil. In: Plant Soil 291 (2007), S. 275-290.
3
Wardle, David A. et al: Fire-Derived Charcoal Causes Loss of Forest Humus. In: Science 320 (5876), S. 629.