Algebraic theory of machines, languages, and semigroups / 
edited by Michael A. Arbib contributors Kenneth Krohn and John L. Rhodes 
 - New York :  Academic,  1968 
 - 359 p. ;  24 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>LCCN: </label>68-018654 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Machine theory<br/>Groups, theory of<br/>Mathematical linguists