TY - GEN AU - Hill, James Edward C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1976-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.899 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1976 TI - Development of proposed standards for testing solar collectors and thermal storage devices: ER -