TY  - RPRT
TI  - Circular of the Bureau of Standards no. 298 2nd edition: United States government master specification for clay, fire
PY  - 1926
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 298e2
DO  - 10.6028/NBS.CIRC.298e2
ER  -