Adler, Irving <br/><br/>
Numbers old and new / 
Irving and Ruth Adler ; illustrated by Peggy Adler 
 - London :  Dennis Dobson,  1961 
 - 50 p. :  ill. ;  22 cm. 
 - The reason why series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number concept--Juvenile fiction
<br/><br/><label>Dewey Class. No.: </label>823