Niven, Ivan Morton,  1915- <br/><br/>
Numbers: rational and irrational / 
Ivan Niven. 
 - New York :  Random House,  1961. 
 - 136 p. :  ill ;  23 cm. 
 - New mathematical library,  1 .
<br/><br/><label>LCCN: </label>61006226 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Numbers, Real.