TY  - BOOK
AU  - Sneddon,Ian Naismith
TI  - Elements of partial differential equations
PY  - 1957///
CY  - New York: 
PB  - McGraw-Hill book co., 
KW  - ECUACIONES DIFERENCIALES PARCIALES
KW  - LAPLACE EQUATION
KW  - INIST
KW  - WAVE EQUATIONS
KW  - SURFACES
ER  -