Langer, Susanne Katherina Knauth <br/><br/>
An introduction to symbolic logic 
by Susanne K. Langer. 
 - 2nd. rev. ed. 
 - New York  Dover Publications  1953. 
 - 367 p.  21 cm. 
<br/><br/>Bibliography: p. 356-360. 
<br/><br/><label>LCCN: </label>66029834  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical
<br/><br/><label>LC Class. No.: </label>BC135  / .L35 1953 
<br/><br/><label>Dewey Class. No.: </label>164