TY  - RPRT
TI  - Circular of the Bureau of Standards no. 297 2nd edition: United States government master specification for refactories, fire-clay, plastic
PY  - 1926
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 297e2
DO  - 10.6028/NBS.CIRC.297e2
ER  -