TRACHTENBERG; ANN CUTLER; RUDOLPH MCSHANE <br/><br/>
THE TRACHTENBERG SPEED SYSTEM OF BASIC MATHEMATICS 

 -  RUPA AND COMPANY  2001 
 - 270 
<br/><br/><label>ISBN: </label>0285629166 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MATHEMATICS GENERAL 
<br/><br/><label>Dewey Class. No.: </label>513.21  / TRA