Day, C. R. A. <br/><br/>
Senior commercial arithmetic  / 
C.R.A. Day. 
 - Toronto :  The Ryerson Press,  1955. 
 - viii, 219 p. ;  18 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic.
<br/><br/><label>Dewey Class. No.: </label>513 DAY