共 6 条
[2]
NANDI BN, 1967, FUEL, V46, P394
[3]
VARIATION OF MICROHARDNESS AND REFLECTANCE OF COAL UNDER CONDITIONS OF OXIDATION SIMULATING WEATHERING
[J].
JOURNAL OF MICROSCOPY-OXFORD,
1977, 109 (JAN)
:93-103
[4]
Teichmuller M, 1973, ADV ORG GEOCHEM, P379
[5]
WOLFS M, 1977, 30TH M COMM COAL PET
[6]
1963, INT HDB COAL PETROLO