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Information retrieval techniques and reference source & tools in pure and applied sciences  Saxena, R.S 

 - Y. K Publishers  1997 
<br/><br/><label>ISBN: </label>8185070083 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Information retrieval system- Techniques<br/>Reference service
<br/><br/><label>Dewey Class. No.: </label>025.52  / SAX