00454nam a22001937a 4500 20260917193202.0 230320b xxu||||| |||| 00| 0 eng d 9788177585582 eng 621.38RD Roddy, Dennis 3290 Electronic Communications 4 New Delhi PEARSON 2013 723p. Physics 3291 John Coolen 3292 BK 15617 15617 0 0 0 0 NDCL NDCL ARCHIVE 2023-03-20 RUSA 2.0 1 621.38RD R794 2025-07-01 00:00:00 2025-05-19 2023-03-20 BK