50 元券半群同态半格Endomorphism¥6140去看看中华商务图书专营店发布了海外直订Endomorphism monoids of Strong semilattices of left simple Semigroups 左单半群强半格的自同态半群60 元券预售semilatticesEndomorphismSemigroups¥7960去看看中图数字图书专营店发布了【预售 按需印刷】Endomorphism monoids of Strong semilattices of left simple Semigroups40 元券9783847313137SemilatticesAlgebras印刷¥7860去看看上海外文图书音像专营店发布了按需印刷On Strong Semilattices of Some Types of Algebras[9783847313137]