TY - GEN AU - Horlick, J AU - Stevenson, J C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1977-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.77-1321 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1977 TI - Collaborative reference program for color and appearance ::ASTM 60° gloss Report no. 21 ER -