00346nam a2200121Ia 4500082002100000100002000021245003000041260004700071300001900118500005400137500000500191700002800196  a515.73bAc178.TA  aAchieser, N. I.  aTheory of approximationb  aNew YorkbFrederick Ungar Publishingc1956  ax, 307p. Index  a"Translated from the Russian by Charles J. Hyman"  a  aHyman, Charles J. ; tr.