TY  - BOOK
AU  - Williams, Arthur B.
TI  - Electronic filter design handbook
SN  - 0-07-070430-9
U1  - 621.3815324 
PY  - 1981///
CY  - New York
PB  - McGraw-Hill
KW  - Circuits theory
KW  - Electric filter
KW  - Filter design
N1  - Includes index
ER  -