00270nam a2200121Ia 45000030006000000080041000060400015000471000024000622450024000862600009001105460012001190050017001310STCL150530s9999 xx 000 0 und d aSTCLcSTCL aBrahma Nand; Others aTheory of equations c1965 aEnglish20220125165933.0