TY - RPRT TI - Standard reference materials : certification of standard reference material 1474a, a polyethylene resin AU - Maurey, J R AU - Flynn, Kathleen M AU - Guttman, C M PY - 2003 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 260-148 DO - 10.6028/NIST.SP.260-148 ER -