00629nam a2200193Ia 4500082002000000100002100020245004900041260005700090300001300147500004400160500000500204690000600209700002400215904004800239952010400287964001700391921001000408999001700418  a515.35bP497.PD  aPetrovsky, I. G.  aLectures on partial differential equationsb  aNew YorkbInterscience Publicationc1954 (Rep. 1961)  ax, 245p.  a"Tr. from the Russian by A. Shenitzer".  a  a   aShenitzer, A. ; tr.  aPartial differential equations lectures on-  001040708GRaISIbISId1998-09-25l0o515.35 P497.PDpG1279r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a14289  c14289d14289