TY  - BOOK
AU  - Smith,M G
TI  - Introduction to the theory of partial differential equations
U1  - 517.383 
PY  - 1967///
CY  - London
PB  - D. Van Nostrand company
KW  - Laplace equations
KW  - Partial differential equations
KW  - Riemann theory
KW  - Wave equation
ER  -