00325nam a2200121Ia 4500008004100000082001500041100001800056245004900074260004400123300001200167942000700179999001700186190709s9999    xx            000 0 und d  a517.36 AG5  aAgmon, Shmuel 0aLectures on Elliptic boundary value problems  aNew yorkbD. Van Nostrand companyc1965  aiii,291  cBK  c41805d41806