TY  - BOOK
AU  - Martin,William Ted
AU  - Reissner,Eric
TI  - Elementary differential equations
T2  - Addision-wesley mathematics series
U1  - 515.35 23
PY  - 1956/// [printing 1958]
CY  - Massachusetts
PB  - Addision-Wesley publishing co.
KW  - Differential equations
N1  - Includes index
ER  -