An introduction to propositional logic and set theory 
Gallo, Cesar Rafael 
 - 2nd Ed. 
 - (S. N):(S. L)  2020 
 - xi, 229p. ; 23cm. 
<br/><br/><label>ISBN: </label>9798593189264 
<br/><br/><label>Dewey Class. No.: </label>C 511.3 G172 2020