00341nam a2200121Ia 4500 230303s9999 xx 000 0 und d eng 621.382 STA Stanley (William.D) & Jeffords (John.M) Electronic Communications principles and systems Australia Cenage Learning RS 182699 182699 0 0 0 0 ECD ECD SHELF NO 31 - A 2023-03-03 325.00 0 621.382 STA EB9223 2023-03-03 00:00:00 2023-03-03 BK