TY - CONF A1 - Buge, Hans-Gerhard A1 - Scharf, Holger A1 - Becker, Roland ED - Gills, T. T1 - Soil samples prepared for a proficiency testing scheme operated by BAM T2 - 8th International Symposium on Biological and Environmental Reference Materials ; 8th BERM CY - Bethesda, MD, USA DA - 2000-09-17 PY - 2001 SN - 1618-2642 VL - 370 IS - 2-3 SP - 174 PB - Springer CY - Berlin AN - OPUS4-944 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Becker, Roland A1 - Nehls, Irene A1 - Buge, Hans-Gerhard T1 - Referenzmaterialien für Umweltanalysen PY - 2001 SN - 0016-3538 IS - 45 SP - 1089 EP - 1091 PB - GIT-Verlag CY - Darmstadt AN - OPUS4-1186 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -