Stuart, Marion <br/><br/>
Subtraction mastery / 
written by Marion Stuart ; editor Cindy Barden 
 - 31 pages :  illustrations 
<br/><br/> Primary 
<br/><br/><label>ISBN: </label>018343187128 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching<br/>Subtraction--Study and teaching
<br/><br/><label>Dewey Class. No.: </label>513.212