00269nam a2200109 a 450000500170000002000140001708200210003110000240005224500380007626000260011430000190014020251203090945.0  a048663314  a515.785,bD, kat  aKatznelson, Yitzhak  aIntroduction to harmonic analysis  aNew YorkbDoverc1976  axiv,264p, 22cm