00279nam a2200121Ia 45000030006000000080041000060400015000471000022000622450035000842600009001195460012001280050017001400STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBlecksley, A.E.H.  aElementary applied mathematics  c1947  aEnglish20220125170022.0