Conway, John Horton. Regular algebra and finite machines, [by] J. H. Conway. - London, Chapman and Hall, 1971. - viii, 147 p. illus. - Chapman and Hall mathematics series . "Distributed in the U.S.A. by Barnes & Noble, inc." ISBN: 0412106205 Subjects--Index Terms: Algebra Universal Decimal Class. No.: 512.715 / CON