TY - GEN AU - Barnes, P Yvonne AU - Early, Edward A AU - Parr, Albert C C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1998-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.250-48 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1998 TI - Spectral reflectance: ER -