Ginsburg Seymour Algebric and automata-theoretic properties of formal languages Ginsburg Seymour - Amsterdam North-Holland 1975 - xii, 313p. cm. - Fundamental studies in computer science; 2 . Standard No.: 25581 Source: Textual Subjects--Topical Terms: algebramathematics Dewey Class. No.: B2893P0aD65,8(B), L52