TY  - BOOK
AU  - Mole,John Henry
TI  - Filter design data for communication engineers
T2  - Electrical engineering series
AV  - TK6565.F5 M6 1952
U1  - 537.5 
PY  - 1952///
CY  - London
PB  - E. & F. N. Spon
KW  - Electric filters
ER  -