TY  - BOOK
AU  - Helszajn,  Joseph 
TI  - Synthesis of lumped element,distributed and planar filters
SN  - 0-07-707166-2
U1  - 621.3815324 
PY  - 1990///
CY  - London
PB  - McGraw-Hill
KW  - Electric filters,Passive
KW  - Electronic circuits
KW  - Semiconductors
N1  - Includes index
ER  -