TY  - RPRT
TI  - Coal taxonomy thesaurus of terms 
AU  - Davies, Alan D
AU  - Cramp, A Philip
PY  - 1981
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 81-2405
DO  - 10.6028/NBS.IR.81-2405
ER  -