TY  - BOOK
AU  - Sneddon Ian N
TI  - Elements of partial differential equations
T2  - International series in pure and applied mathematics
U1  - B334, J71;21   TB 
PY  - 1957///
CY  - New York McGraw-Hill Book Co., Inc.
KW  -  Differential equations
KW  - Mathematics
N1  - Index 323-327p
ER  -