TY  - BOOK
AU  - Ian Naismith Sneddon
AU  - Ian Naismith Sneddon
TI  - Elements of partial differential equations
T2  - International series in pure and applied mathematics
U1  - 517.38 SNE 
PY  - 1957///
CY  - New York, 
PB  - :McGraw-Hill
N1  - Ordinary differential equations in more than two variables --
Partial differential equations of the first order --
Partial differential equations of the second order --
Laplace's equations --
The wave equation --
The diffusion equation --
Systems of surfaces
ER  -