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Published in Khimiya Prirodnykh Soedinenii, No. 6, pp. 502–503, November–December, 2004.
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Banjaw, M.Y., Schmidt, W.J. Lyophilization and freeze-precipitation as a method for crude extraction of cathinone from Catha edulis leaves with minimum thermal injury. Chem Nat Compd 40, 611–612 (2004). https://doi.org/10.1007/s10600-005-0056-4
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DOI: https://doi.org/10.1007/s10600-005-0056-4