TY  - BOOK
AU  - Martin,William Ted,1911-
AU  - Reissner,Eric,joint author
TI  - Elementary differential equations
T2  - Addison-Wesley series in mathematics
U1  - 515.35 
PY  - 1964///
PB  - Addison- Wesley publishing company
KW  - Differential equations
KW  - Boundary value problems
N1  - Includes index
ER  -