00488nam a2200157Ia 4500003000900000008004100009040001600050080001600066100002600082245006800108260003500176300001500211490005000226650001900276650003500295IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a517.95bLIE  aLieberstein, H Melvin 0aTheory of partial differential equationscH. Melvin Lieberstein  aNew YorkbAcademic Pressc1972  axiv, 283p.  aMathematics in Science and Engineering; v. 93  aNASA Thesaurus  aPartial differential equations