Proof and knowledge in mathematics/ 
edited by Michael Detlefsen. 
 - London:  Routledge,  1992. 
 - 256 p.;   22 cm. 
<br/><br/><label>ISBN: </label>0415068053 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Philosophy.<br/>Logic, Symbolic and mathematical.