Formal language theory perspectives and open problems ed by Ronald Book 

 - N.Y  Academic Press        1980 
<br/><br/><label>Standard No.: </label>50,060 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LINGUISTICS
<br/><br/><label>Dewey Class. No.: </label>P:(D65,8(B))p1,N9, M0