TY - GEN AU - Masters, Larry W AU - Seiler, James F AU - Embree, Edward J AU - Roberts, Willard E C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1981-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.81-2232 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1981 TI - Solar energy systems - Standards for absorber materials: ER -