Decibel notation /
Chakravarti, S. P.
Decibel notation / by S. P. Chakravarti - New Delhi : Govet of India, 1944.
Broad Casting Electrionics
Decibel notation / by S. P. Chakravarti - New Delhi : Govet of India, 1944.
Broad Casting Electrionics