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Communicated by N.R. Reilly
This work was done as part of the author's M.Sc. thesis at Simon Fraser University, and was supported by The Natural Sciences and Engineering Research Council of Canada.
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Wismath, S.L. The lattices of varieties and pseudovarieties of band monoids. Semigroup Forum 33, 187–198 (1986). https://doi.org/10.1007/BF02573192
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DOI: https://doi.org/10.1007/BF02573192