Determination of the fraction of organic carbon observable in coals and coal derivatives measured by high-resolution solid-state carbon-13 nuclear magnetic resonance spectrometry
1986 ◽
Vol 189
◽
pp. 117-133
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1990 ◽
Vol 112
(8)
◽
pp. 2886-2891
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1967 ◽
Vol 38
(6)
◽
pp. 831-831
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