Conant, Levi Leonard,  1857-1916 <br/><br/>
The number concept :  its origin and development / 
by Levi Leonard Conant 
 - New York :  Macmillan,  1896 
 - vii, 218 p. ;  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number concept
<br/><br/><label>Dewey Class. No.: </label>511.2