TY - RPRT TI - Silicate cement : method of mixing in a closed container to prevent effects of exposure to atmosphere AU - Grunewald, A H AU - Schoonover, I C AU - Dickson, George PY - 1951 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS report ; 1446 DO - 10.6028/NBS.RPT.1446 ER -