TY  - BOOK
AU  - Smith,M.G.
TI  - Introudction to the theory of partial differential equations
AV  - MATH QA374.S57 
PY  - 1967///
CY  - London
PB  -  : D. Van Nostrand Company
KW  - Differential equations
KW  -  partial
N1  - Includes bibliographical references and index
ER  -