TY  - BOOK
AU  - Stephens,Eugene
TI  - The elementary theory of operational mathematics,
T2  - Electrical engineering texts
U1  - 517.7 
PY  - 1937///
CY  - New York, London
PB  - McGraw-Hill Book Company, inc.
KW  - CÁLCULO OPERATIONAL
KW  - ECUACIONES DIFERENCIALES LINEALES
ER  -