TY - RPRT TI - Water permeability and weathering resistance of stucco-faced, gunite-faced, and "knap concrete-unit" walls AU - Fishburn, Cyrus C PY - 1942 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS BMS 94 DO - 10.6028/NBS.BMS.94 ER -