Cutler, Ann  <br/><br/>
Trachtenberg speed system of basic mathematics 
Ann Cutler 
 - New Delhi  Rupa & Co  1960 
 - 270p. 
<br/><br/><label>ISBN: </label>9780285629165 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental arithmetic<br/>Arithmetic
<br/><br/><label>Dewey Class. No.: </label>513.92 C973t