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Communicated by D. R. Brown
Dedicated to E. S. Ljapin and Štefan Schwarz on their 60th birthdays.
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Lau, A.Y.W. Problems 44 and 39 on compact semilattices. Semigroup Forum 9, 179��180 (1974). https://doi.org/10.1007/BF02194846
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DOI: https://doi.org/10.1007/BF02194846