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Additional information
Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 136–138, January–February, 1972.
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Forostyan, Y.N., Koval'chuk, B.V. The reaction of the hydrolysis lignin of sunflower husks with ammonia. Chem Nat Compd 8, 144–145 (1972). https://doi.org/10.1007/BF00564479
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DOI: https://doi.org/10.1007/BF00564479