Davies, A.
and Cramp, A.
(1981),
Coal taxonomy thesaurus of terms:, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NBS.IR.81-2405 (Accessed May 19, 2026)
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Coal taxonomy thesaurus of terms:
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- NBS IR 81-2405
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NBS IR 81-2405
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NIST Pubs
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Created January 1, 1981, Updated May 19, 2023