00461 a2200145 4500 38707 38707 WUSLLib 200131b ||||| |||| 00| 0 eng d 621.38 GUP Gupta, Sanjeeva 15446 Electronics communications systems : a textbook for electronics engineering students Delhi Khanna publishers 1981 1981 xii, 792p. 21cm. ELECTRONICS AND COMMUNICATIONS 15447 L ddc 0 0 0 0 LEN MAIN MAIN LEN 2008-11-10 1 621.38GUP 9373 2025-10-27 00:00:00 2025-10-09 0.00 2016-10-31 L 0 0 0 0 LEN MAIN MAIN LEN 2008-11-10 1 621.38GUP 9372 2025-10-27 00:00:00 2025-10-09 0.00 2016-10-31 L 0 0 0 0 LEN MAIN MAIN LEN 2009-01-19 0 621.38GUP 24371 2017-08-31 00:00:00 0.00 2016-10-31 L