00430nam a2200157 4500 12057 12057 210119b ||||| |||| 00| 0 eng d 0028005929 621.38 K351 4059 Kennedy, George Electronic communication system / 4th ed. Lake Forest: Macmillan, 1992. xv, 763 p. Telecommunication ddc BK 0 0 ddc 0 621_380000000000000_K351 0 22530 CL CL 2021-01-19 621.38 K351 08528 2021-01-19 BK