Fehr, Howard F. & Schult, Veeryl <br/><br/>
Arithmetic at Work 
By Howard F. Fehr & Veryl Schult 
 - Boston  D.C. Health and Company  1955 
 - 410 pages, 24 cm. 
<br/><br/> includes index & credits 
<br/><br/><label>Dewey Class. No.: </label>511 F38 C1