Asimov, Isaac,  1920-1992 <br/><br/>
Realm of numbers / 
by Isaac Asimov ; with diagrams by Robert Belmore. 
 - London :  V. Gollancz,  1959. 
 - 140 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Numeration.<br/>Arithmetic.<br/>Number concept.