Langer, Rudolph E. <br/><br/>
On numerical approximation - proceedings   
ed. by Rudolph E. Langer 
 - Madison  Univ. of Wisconsin P  1959 
 - ix, 462p, 
 - Publication of the Mathematics Research Centre, U.S. Army, University of Wisconsin  No.1 .
<br/><br/><label>Dewey Class. No.: </label>511.4  / N59