00502nam a2200169 a 450000500170000002000180001708200160003510000190005124500470007026000390011730000250015669000270018196400160020899700190022499900190024395200700026220251203111554.0  a9780486452975  a515.35bSNE  aSneddon, Ian N  aElements of partial differential equations  aNew YorkbDover Publicationsc2006  aviii,327.c20cm.bPB  aDifferential equations  bcdefg_  a161000 LIBSC C  c130686d130686  00104070aPUbPUd2010-03-16g735.26l0o515.35 SNEp161000yBK