TY - GEN AU - Marshall, Harold E AU - Ruegg, Roasalie T AU - Wilson, Forrest C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1980-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.LCIRC.1123 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1980 TI - Letter Circular 1123::energy design economics ER -