Bird, Steven. <br/><br/>
Natural language processing with python / 
By Steven Bird...[et.al]. 
 - 1st ed. 
 - New Delhi :  Shroff  Publishers and Distributors Pvt Ltd ,  2011. 
 - xx,479,23p. ;  23cm. 
<br/><br/><label>ISBN: </label>9788184047486 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Accessing text corpora and lexical resources<br/>Building feature based grammars<br/>Categorizing and tagging words
<br/><br/><label>Dewey Class. No.: </label>006.35  / BIRS