TY  - BOOK
AU  - Sneddon Ian N
AU  - Sneddon Ian N
TI  - Elements of partial differential equations
SN  - 9780486498768 (pbk)
U1  - B334, J7;23-;27 
PY  - 1977///
CY  - New York       
PB  - Dover      
KW  -  Differential equation
KW  - General Science
N1  - Index 323-327p
ER  -