TY  - BOOK
AU  - Clark,John C.
TI  - Electronic communication systems: theory and practice 
SN  - 9781682513859
AV  - TK5101 E54
PY  - 2018///]
CY  - New Rochelle, New York, NY.
PB  - Intelliz Press
KW  - Telecomunicaciones
ER  -