TY - RPRT TI - Standard Reference Materials : Compilation of NIST higher-order methods for the determination of electrolytes in clinical materials/ AU - Murphy, Karen E AU - Long, Stephen E PY - 2006 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 260-162 2006ed. DO - 10.6028/NIST.SP.260-162e2006 ER -