00320nam a2200121Ia 4500008004100000020001800041082001500059100002100074245005100095250000800146260003600154300000800190190710s9999    xx            000 0 und d  a81-8128-147-0  a515.363 R2  aRenardy, Michael 0aIntroduction to partial differential equations  a2nd  aNew YorkbSpringer Verlagc2008  a434