Herman, Gabor T. <br/><br/>
Developmental systems and languages. 
Gabor T Herman and Grzegorz Rozenberg. 
 - Amsterdam.  North-Holland Publishing.  c1975 
 - xvi,363p.:  ill.;  24cm. 
<br/><br/><label>ISBN: </label>0444106502 
<br/><br/><label>Dewey Class. No.: </label>412  /   HER