TY - GEN AU - Cullen, William C AU - Walton, William W C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1962-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.7489 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1962 TI - Performance of roofing in Puerto Rico: ER -