TY  - BOOK
AU  - Krzyzanski,Mirosaw
AU  - Zorski,Henryk
TI  - Partial differential equations of second order
U1  - 517.383 
PY  - 1971///
CY  - Warszawa
PB  - Polish Scientific Publishers
KW  - Differential equations, Partial
N1  - Translation of: Rownania rozniczkowe czastkowe rzedu drugiego; Includes bibliographical references and index
ER  -