00309nam a2200121Ia 45000030006000000080041000060400015000471000017000622450046000792600033001255460012001580050017001700STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aSharma, B.B.  aStablity of a disturbed motion of coupied  bMathematical Educationc1973  aEnglish20220125170028.0