TY  - BOOK
AU  - Epstein Bernard
TI  - Partial differential equations:  An introduction   
T2  - International Series in Pure and Applied Mathematics Ed by William Ted Martin and E H Spanier
U1  - B334, K2 
PY  - 1962///
CY  - New York
PB  - McGraw-Hill         
KW  - Equations
N1  - Bibliography:  P 267-268
ER  -