Bittinger, Mervin L. <br/><br/>
Logic and proof 

 - Masschusetts  Addison-Wesley Publishing Company  1970 
 - 129p.  24cm. 
<br/><br/><label>ISBN: </label>0201005972 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic
<br/><br/><label>LC Class. No.: </label>BC135.B6