TY  - BOOK
AU  - Martin,William Ted
AU  - Reissner,Eric
TI  - Elementary differential equations / 
T2  - This book is in the addison-wesley series in mathematics
AV  - QA371  M37 1961 
PY  - 1961///
CY  - Massachusetts
PB  - Addison-Wesley
KW  - Lemb
KW  - Ecuaciones diferenciales
N1  - Incluye índice
ER  -