Polkowski, Lech <br/><br/>
Rough sets in knowledge discovery 1 :   methodology and applications / 
Lech Polkowski and Andrzej Skowron 
 - New York :  Physica Verlag,  1998 
 - ix, 576p, 24cm. 
 - Studies in fuzziness and soft computing .
<br/><br/><label>ISBN: </label>379081119X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Expert systems (Computer science)<br/>Set theory
<br/><br/><label>Dewey Class. No.: </label>511.322  / POL