TY  - BOOK
AU  - Hilburn John L
TI  - Manual of active filter design
SN  - 0070287694
U1  - D65,2:4 L3,M3 
PY  - 1983///
CY  - New York
PB  - MaGraw-Hill
KW  - Electri filters
N1  - Include index
ER  -