TY  - BOOK
AU  - Skwirzynski,Josef Kasimierz
TI  - Design Theory and Data for Electrical Filters.
T2  - The marconi series
U1  - 621.38412 23
PY  - 1965///
CY  - London
PB  - D. Van Nostrad co.
KW  - Electric filters
N1  - Includes Index
ER  -