00333nam a2200121Ia 4500008004100000082001800041100001900059245004700078250001200125260003800137300000800175650002800183230106s9999    xx            000 0 und d  a621.381bFL-D  aFloyd,Thomas L 0aDigital fundamentals and lightwave systems  a4th Ed.  aNew DelhibCollins Businessc1990  a786  aElectronics Engineering