Mold, Josephine. <br/><br/>
Number lines /  
Josephine Mold. 
 - Cambridge :    Cambridge University Press,    1973. 
 - 32 p. :    ill. ;    22 cm. 
 - Topics from mathematics .
<br/><br/><label>ISBN: </label>0521200237 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Number line -- Juvenile literature.<br/> Number concept -- Juvenile literature.
<br/><br/><label>Dewey Class. No.: </label>513 MOL