TY  - BOOK
AU  - Dachateau, Paul  .
AU  - Zachmann,David W  .
TI  - Theory and problems of partial differential equations / 
T2  - Schaum`s outline series, 
SN  - 0  07  017897   6
U1  - 515.35 
PY  - 1986///
CY  - New York : 
PB  - McGraw Hill Book Company , 
ER  -