TY - CONF A1 - Scharf, Holger A1 - Becker, Roland A1 - Buge, Hans-Gerhard T1 - Soil samples prepared for a proficiency testing scheme operated by BAM T2 - BERM-8 T2 - BERM-8 CY - Bethesda, MD, USA DA - 2000-09-17 PY - 2000 AN - OPUS4-5727 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -