00782    a2200385   4500000002100000001000700021005001700028008004100045010000500086020001800091082001800109100002300127110000500150245007300155250001200228260003600240300001000276490000700286500000500293600000500298610000500303611000500308630001600313650000500329651000500334654000500339700000900344710000900353711000500362720000500367730000500372740000500377752000500382856000900387BKB                 14155120200902165551.0                                          a  a9788189938765  a515.353bF72I1 aFolland, Gerald B.  a1 aIntroduction to partial differential equationscby Gerald B. Folland  a2nd ed.  aNew DelhibOverseas Pressc2011  a324p.  av  a  a  a  a  aMathematics  a  a  a  abc  abc  a  a  a  a  a  adf