TY - RPRT TI - Standard Reference Materials : Primary standards and standard reference materials for electrolytic conductivity/ AU - Wu, Y C AU - Jameel, R H PY - 2000 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 260-142 DO - 10.6028/NIST.SP.260-142 ER -