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Translated from Algebra i Logika, Vol. 23, No. 1, pp. 27–47, January–February, 1984.
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Gurchenkov, S.A. Varieties of ℓ-groups with the identity 20-120-120-1have finite bases. Algebra and Logic 23, 20–35 (1984). https://doi.org/10.1007/BF01979697
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DOI: https://doi.org/10.1007/BF01979697