Dubnov, IAkov Semenovich <br/><br/>
Mistakes in geometric proofs 

 - Boston :   Heath and Company,  1963. 
 - 57p.  : ill.   ; 21cm.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry<br/>Problems<br/>exercises etc<br/>Fallacies (Logic)
<br/><br/><label>LC Class. No.: </label>PAM QA459.D813