TY  - GEN
AU  - Davison,C.B.
AU  - Heystek,Hendrick
ED  - United States.
TI  - Cristobalite in fire clay calcines
T2  - Report of investigations
PY  - 1979///
CY  - [Washington]
PB  - U.S. Dept. of the Interior, Bureau of Mines
KW  - Cristobalite
KW  - Fire-clay
KW  - Refractory materials
ER  -