00345nam a2200133Ia 45000030006000000080041000060400015000471000035000622450065000972500011001622600009001735460012001820050017001940STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aWhittaker Edmund; Robinson, G.  aCalculus of observations:A treatise on numerical mathematics  aFourth  c1949  aEnglish20220125170038.0