00286nam a2200121Ia 45000030006000000080041000060400015000471000022000622450042000842600009001265460012001350050017001470STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRoberts Ralph, A.  aTreatise the integral calculus part I  c1887  aEnglish20220125165950.0