Van Rijsbergen, C. J. <br/><br/>
Research and development in information retrieval   
by C. J. Rijsbergen Van 
 - Cambridge  CUP  1984 
 - 433p. 
 - The british computers society workshop series .
<br/><br/><label>ISBN: </label>0521268656 
<br/><br/><label>Dewey Class. No.: </label>025.524  / N84;1