TY  - BOOK
AU  - Seeley,Walter J.
TI  - An introduction to the operational calculus,
T2  - International texts in electrical engineering; E.E. Dreese ... consulting editor
U1  - 517.7 
PY  - 1941///
CY  - Scranton, Pa.
PB  - International textbook company
KW  - CÁLCULO OPERACIONAL
ER  -