000 00312nam a2200121Ia 4500
008 210324s1977 xx 000 0 und d
041 _aeng
082 _aD65, 138 N77
100 _aM. J. Narasimha
245 _aTechniques in Digital Signal Processing
_cM. J. Narasimha
260 _c1977
650 _aUltrasonic
999 _c428843
_d428843