00378    a2200133   4500001000700000003000400007005001700011008004100028082001800069100002300087245008600110260003800196300001000234131220OSt20210909102746.0                                          a515.723bS43S1 aSpiegel, Murray R.1 aSchaum's outline of theory and problems of fourier analysiscby Murray R. Spiegel  aNew DelhibTata McGraw Hillc2011  a191p.