Willers, Friedrich Adolf,  1883-1959. <br/><br/>
Practical analysis;  graphical and numerical methods; 
tr. by Robert T. Beyer. 
 - New York :  Dover Publications  [c1948] 
 - x, 422 p.  diagrs.  25 cm. 
<br/><br/> Translation of Methoden der praktischen Analysis. 
<br/><br/>índice al final del volúmen. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Approximation theory.<br/>NUMERICAL ANALYSIS
<br/><br/><label>Subjects--Index Terms: </label>Teoría de aproximación. 
<br/><br/><label>Universal Decimal Class. No.: </label>518.4