TY - RPRT TI - Thirty-year stability of standard reference material 2034 holmium oxide solution wavelength standard for spectrophotometry AU - Smith, Melody V AU - Travis, John C AU - Duewer, David L PY - 2018 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 260-192 DO - 10.6028/NIST.SP.260-192 ER -