00429cam a2200157ua 4500 eng 621.3845 HAR/PR Harbottle, H.R . Principles of telecommunications engineering / H.R.Harbottle. Textual Documents London : English Universities Press , 1962. 373 ; . Hamman, G.L.B . BK 338099 338099 1 0 0 0 KAUAET KAUAET 2012-04-07 0 621.3845 KAU_KCAEFT-3759 2025-09-03 00:00:00 2025-09-03 BK