TY - CONF A1 - Becker, Roland T1 - Proficiency testing of laboratories by interlaboratory comparisons T2 - Workshop of proficiency testing of laboratories by interlaboratory comparisons T2 - Workshop of proficiency testing of laboratories by interlaboratory comparisons CY - Dar Es Salaam, Tanzania DA - 2005-07-06 PY - 2005 AN - OPUS4-7650 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -