TY  - BOOK
AU  - Sneddon, Ian Naismith.
TI  - Elements of partial differential equations
SN  - 9780486452975 (pbk.
U1  - 515.353 
PY  - 2006///
CY  - Mineola, N.Y.
PB  - Dover Publications
KW  - Differential equations, Partial
UR  - http://www.loc.gov/catdir/enhancements/fy0643/2006045445-d.html
ER  -