00333nam a2200121Ia 45000030006000000080041000060400015000471000015000622450056000772600049001335460012001820050017001940STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aLion, J.L.  aLectures on elliptic partial differential equations  bTata Institute of Fundemental Researchc1957  aEnglish20220125165943.0