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Ngarmcherd Danpattanamongkon. (2006) Semigroups admitting nearring structure . Chulalongkorn University/Bangkok.
Ngarmcherd Danpattanamongkon. Semigroups admitting nearring structure. . Bangkok:Chulalongkorn University, 2006.
Ngarmcherd Danpattanamongkon. (2006) Semigroups admitting nearring structure . Chulalongkorn University/Bangkok.