TY  - GEN
AU  - Williams,William Elwyn
TI  - Partial differential equations
T2  - Oxford applied mathematics and computing science series
SN  - 0198596324
U1  - 515.3/53 
PY  - 1980///
CY  - Oxford [Eng.], New York
PB  - Clarendon Press, Oxford University Press
KW  - Differential equations, Partial
N1  - Contine index
ER  -