TY - RPRT TI - A Biochar Classification System and Associated Test Methods AU - Singh, Balwant AU - Amonette, James E. AU - Camps-Arbestain, Marta AU - Kookana, Rai S. PY - 2024 DO - 10.4324/9781003297673-9 UR - https://www.osti.gov/biblio/2447966 ID - 2447966 ER -