TY - JOUR A1 - Preston, C. M. A1 - Schmidt, M. W. I. T1 - Black (pyrogenic) carbon: a synthesis of current knowledge and uncertainties with special consideration of boreal regions JO - Biogeosciences J1 - BG VL - 3 IS - 4 SP - 397 EP - 420 Y1 - 2006/09/19 PB - Copernicus Publications SN - 1726-4170 UR - http://www.biogeosciences.net/3/397/2006/ L1 - http://www.biogeosciences.net/3/397/2006/bg-3-397-2006.pdf ER -