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Structures of humic acid basic core (A) and fulvic acid (B). Source: (Wang and Mulligan 2018). |
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| Part of: Strus O, Fedorovska M, Holota S, Polovko N (2021) Development and validation of standardization methods of aqueous sapropel extract. Pharmacia 68(4): 933-939. https://doi.org/10.3897/pharmacia.68.e71783 |