000 00279nam a2200121Ia 4500
008 211209s1975 xx 000 0 und d
041 _aeng
082 _aSAI
100 _aSAIHGAL R L
245 _aOSCILLATIONS AND WAVES ACOUSTICS AND OPTICS.
260 _c1975
300 _a413
999 _c13486
_d13486