TY  - BOOK
AU  - Logan, J David
AU  - Axler, S
TI  - Partial differential equations
SN  - 818128318X
U1  - 517.95 
CY  - New York
PB  - Springer
KW  - ORTHOGONAL EXPANSIONS
KW  - PARTIAL EQUATIONS
N1  - With 40 illustrations.
ER  -