Saxena, R S <br/><br/>
Information retrieval techniques and reference sources and tools in pure and applied sciences 

 - 1st 
 - Agra  Y K Publishers  1987 
 - [12],144p p. 
<br/><br/><label>ISBN: </label>81-85070-08-3 
<br/><br/><label>Subjects--Index Terms: </label>Information retrieval system - Techniques