TY  - RPRT
TI  - Materials research for the clean utilization of coal : quarterly progress report April - June 1979
AU  - Schneider, Samuel J
PY  - 1979
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 79-1901
DO  - 10.6028/NBS.IR.79-1901
ER  -