Information retrieval  data structures and algorithms 
ed. by William B. Frakes, Ricardo Baeza-Yates. 
 - Bangalore  P-H  1992 
 - viii, 504p 
<br/><br/><label>ISBN: </label>0134638379 
<br/><br/><label>Dewey Class. No.: </label>025.04  / N92