Characterization of the International Humic Substances Society standard and reference fulvic and humic acids by solution state carbon-13 (13C) and hydrogen-1 (1H) nuclear magnetic resonance spectrometry
2019 ◽
Vol 142
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pp. 104665
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1987 ◽
Vol 26
(7)
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pp. 1284-1286
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1986 ◽
Vol 189
◽
pp. 117-133
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