Murray, W. <br/><br/>
Subtraction made easy 

 - Loughborough  Wills & Hepworth  1967 
 - 52 
 - Ladybird Basic Arithmetic Series .
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>J