TY  - RPRT
TI  - The effect of atmospheric contaminants on the durability of building materials: report
AU  - Gray, Vannie E
PY  - 1968
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 9927
DO  - 10.6028/NBS.RPT.9927
ER  -