Achieser, N. I. <br/><br/>
Theory of approximation   

 - New York  Frederick Ungar Publishing  1956 
 - x, 307p. Index 
<br/><br/> "Translated from the Russian by Charles J. Hyman"   
<br/><br/><label>Dewey Class. No.: </label>515.73  / Ac178.TA