TY  - BOOK
AU  - Martin,William Ted
AU  - Reissner,Eric
TI  - Elementary differential equations
AV  - QA372 .M38 1961
U1  - 515.35 MAR 1964 
PY  - 1964///
CY  - Reading Mass
PB  - Addison-Wesley Pub.
KW  - Differential equations
N1  - Includes index
ER  -