TY  - BOOK
AU  - Sneddon,Ian N.
TI  - Elements of partial differential equation / 
T2  - Mathematics series   
SN  - 0070857407   
PY  - 1957///
CY  - Singapore
PB  - McGraw-Hill, 
KW  - Differential equation
KW  - Partial
N1  - Includes index
ER  -