Yarnelle, John E. <br/><br/>
The rational numbers 
by John Yarnelle and Richard Spreckelmeyer. 
 - Boston  Heath  [1965] 
 - v, 73 p.  21 cm. 
 - Thinking with mathematics .
<br/><br/><label>LCCN: </label>65004209  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory.
<br/><br/><label>LC Class. No.: </label>QA241  / .Y3 
<br/><br/><label>Dewey Class. No.: </label>512.81