TY - CONF A1 - Buge, Hans-Gerhard A1 - Scharf, Holger A1 - Becker, Roland A2 - Gills, T. T1 - Soil samples prepared for a proficiency testing scheme operated by BAM T2 - Biological and environmental reference materials (Fresenius' journal of analytical chemistry 370,2/3) PB - Springer CY - Berlin T2 - 8th International Symposium on Biological and Environmental Reference Materials ; 8th BERM CY - Bethesda, MD, USA DA - 2000-09-17 PY - 2001 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/944 AN - OPUS4-944 SN - 1618-2642 VL - 370 IS - 2-3 SP - 174 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany