Steen, S. W. P. <br/><br/>
Mathematical logic :  with special reference to the natural numbers / 
S. W. P. Steen 
 - Cambridge :  The University Press,  c1972 
 - xvi, 638 p. ;  23 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0521080533 :  PND 17.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical<br/>Numbers, Natural
<br/><br/><label>Dewey Class. No.: </label>164