Veldman, Wim <br/><br/>
On sets enclosed between a set and its double complement 

 - Nijmegen  Catholic University, Department of Mathematics  1996 
 - 14p.  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Set theory
<br/><br/><label>LC Class. No.: </label>MATH QA3.R46 no.9634