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Varieties of finitely approximable semigroups. (English. Russian original) Zbl 0521.20047

Sov. Math. 26, No. 11, 25-36 (1982); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1982, No. 11(246), 21-29 (1982).

MSC:

20M07 Varieties and pseudovarieties of semigroups
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