Thomason, Richmond H. <br/><br/>
Symbolic logic :  An introduction / 
Richmond H. Thomason. 
 - London :  Macmillan,  1970. 
 - xiii, 367 p. ;  24 cm. 
<br/><br/> With answers.  Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical.