TY - BOOK AU - Arbib,Michael A. AU - Krohn,Kenneth AU - Rhodes,John L. TI - Algebraic theory of machines, languages, and semigroups AV - QA267 .A44 U1 - 621.8 PY - 1968/// CY - New York PB - Academic Press KW - Machine theory KW - Group theory KW - Mathematical linguistics N1 - Includes bibliographies ER -