Ian Sneddon creator New York McGraw Hill 1957 Student edition x,327p Ordinary Differential Equations In More Than Two Variables (Page-1), Partial Differential Equations Of The First Order (Page-44), Partial Differential Equations Of The Second Order (Page-88), Laplace Equation (Page-141), The Wave Equation (Page-209). Sneddon,Ian N Ian N.Sneddon Differential Equation 515.35,SNE 566972 20221121114139.0