00568nam a2200217 a 450000500170000002000180001708200170003510000200005224500380007225000150011026000300012530000260015549000440018150000270022560000080025263000160026063000270027663000350030385600060033885600060034420251203114921.0  a9781470454746  a515.353bVAS  aVasy, Andrasd_  aPartial differential equationsb_  aIndian ed.  aprovidence, RIbAMSc2019  ax, 281 p.c24 cm.bPB  aGraduate studies in mathematics vol 169  a1st Indian ed. in 2019  bc_  aMathematics  aDifferential equations  aPartial differential equations  f_  a_