Wheeler, David <br/><br/>
R is for real 
by David Wheeler 
 - Milton Keynes  The Open University Press  1974 
 - 179 p. : ill. ; 22 cm. 
<br/><br/>p. 175-179 
<br/><br/><label>ISBN: </label>0335056008 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Numbers, Theory of<br/>Numbers, Real