Fitch, Frederic Brenton. <br/><br/>
Symbolic logic  an introduction 
by Fredric Brenton Fitch. 
 - New York  Ronald Press Company  1952 
 - x, 238p. 
<br/><br/><label>LCCN: </label>52-6196 
<br/><br/><label>Dewey Class. No.: </label>511.3  / N52