00616nam a22001697a 4500003000400000005001700004008004100021020002500062040002700087100003100114245012300145250001900268260003800287300003000325504006200355700002900417OSt20250509094634.0250507b        |||||||| |||| 00| 0 eng d  a9781525550256 (pbk.)  cNVSU Bayombong Library  aLeonard, T. Hillen, I. E.   aPartial differential equations: btheory and completely solve problems/  cT. Hillen, I. E. Leonard and H. van Roessel  aSecond edition  aCanada:bFriesen Press,c c2019.   avii, 678 pages ; c23 cm.  aIncludes appendix, bibliographical references and index.
  aRoessel, H. van eauthor