Sneddon, Ian N. Elements of partial differential equations / Ian N. Sneddon. - 1a ed. - Tokyo : McGraw-Hill, 1957 - ix, 327 p. : il. ; 21 cm. - (International series in pure and applied mathematics) . Incluye apéndice e índice Subjects--Topical Terms: Ecuaciones diferenciales parciales LC Class. No.: QA374 / S64 1957