TY - RPRT TI - Standardization in spectrophotometry and luminescence measurements AU - Mielenz, K D AU - Velapoldi, R A AU - Mavrodineanu, R PY - 1977 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS SP 466 DO - 10.6028/NBS.SP.466 ER -