TY  - BOOK
AU  - Copson,E T
TI  - Partial differetial equations
SN  - 0521205832
U1  - 517.383 
PY  - 1975///
CY  - New Delhi
PB  - S Chand and Co.
KW  - Differential equations, partial
KW  - Marcel rieszs method
KW  - Riemanns method
ER  -