TY - GEN AU - Lerchen, Frank H AU - Pielert, James H AU - Chen, Phillip T C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1981-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.81-2289 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1981 TI - Preliminary guidelines for condition assessment of buildings being considered for solar retrofit: ER -