What is mathematical logic / 
J. N. Crossley ... [et al.]. 
 - Oxford:   Oxford University Press,   1978.  
 - 82 p. :  ill. ;  20 cm. 
<br/><br/><label>ISBN: </label>0198880871 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical
<br/><br/><label>Dewey Class. No.: </label>511.3