Cutler, Ann <br/><br/>
The trachtenberg speed system of basic mathematics 

 - 1st 
 - New Delhi  Rupa  2016 
 - 270p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic  basic mathematics
<br/><br/><label>Dewey Class. No.: </label>513.92  / CUT