Biblio
“PREHISTORIC ALTERATION OF SOIL PROPERTIES IN A CENTRAL GERMAN CHERNOZEMIC SOIL”, Soil Science, vol. 168, no. 4, pp. 292 - 306, 2003.
, “Black carbon in grassland ecosystems of the world”, Global Biogeochemical Cycles, vol. 24, no. 3, p. n/a - n/a, 2010.
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