00407nam a2200133 a 450000500170000002000150001708200170003210000200004924500810006925000120015026000340016230000200019649000570021620251203110108.0  a0071158359  a515.353bPIN  aPinsky, Mark A.  aPartial differential equations and boundary-value problems with applications  a3rd ed.  aBostonbWCB McGraw-Hillc1998  axiv,526p.c22cm  aInternational series in pure and applied mathematics