x  x  <br/><br/>
Instruction in arithmetic; twenty-fifth yearbook.   x 

 - x  
 - Washington  National Council of teachers of Mathematics,   1964  
 - viii, 366p.  
<br/><br/>
<br/><br/><label>ISBN: </label>x      
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic  Arithmetic  
<br/><br/><label>Dewey Class. No.: </label>513/INS