TY - GEN AU - Sneddon,Ian N. TI - Elements of partial differential equations U1 - 515.35 / S533e PY - 1957/// CY - Tokyo PB - Mcgraw-Hill KW - Ecuaciones diferenciales N1 - Ordinary differential equations in more than two variables, cap.1 partial differential equations of the first order, cap.2 partial differential equations of the second order, cap.3 laplaces̀ equation, cap.4 the wave equation, cap.5 the diffusion equation, cap.6 ER -