Simpson, R. L. ,  1934- <br/><br/>
Essentials of symbolic logic / 
R. L. Simpson 
 - London :  Routledge,  c1988 
 - iv, 193 p. :  ill., charts ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0415018706 :  PND 25.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical
<br/><br/><label>Dewey Class. No.: </label>164