TY - GEN AU - Ryan, J V C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1956-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.4920 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1956 TI - Fire tests of precast thin-shell concrete roof panels: ER -