TY - RPRT TI - Water permeability tests of three transparent waterproofing materials applied to concrete masonry walls AU - Bryson, James O AU - Kleinschmidt, L R AU - Snoke, H R PY - 1957 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 5414 DO - 10.6028/NBS.RPT.5414 ER -