00318nam a2200121Ia 45000030006000000080041000060400015000471000033000622450063000952600009001585460012001670050017001790STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aVulikh, B.J.; Volosova, I.G.  aBrief course in the theory of functions of a real variable  c1976  aEnglish20220125165956.0