00448nam a2200181Ia 4500003000400000005001700004008004100021020001800062040000700080041000800087082002000095100002400115245003600139260005400175300001700229365001300246440000700259OSt20230405143519.0210423s1998    xx            000 0 und d  a9788131726938  cAL  aeng  a515.35 EVAL223  aEVANS (Lawrence C).  aPartial differential equations.  aRhode IslandbAmerican mathematical societyc1998  axvii,662bPB  b900cINR  v19