Enderton, Herbert B. <br/><br/>
A mathematical introduction to logic / 
Herbert B. Enderton. 
 - New York :  Academic Press,  1972. 
 - xiii, 295 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0122384504 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical.