Midthun, Joseph <br/><br/>
Subtraction / 
Joseph Midthun & Samuel Hiti 
 - Chicago  World Book  2016 
 - 32 p.  col. ill.   25 cm. 
 - Building Block of Mathematics .
<br/><br/><label>ISBN: </label>9780716614371 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Subtraction