00294nam a2200097Ia 4500008004100000082002100041100002200062245002200084260003600106650005400142211119s9999||||xx |||||||||||||| ||und|| a621.38223bOPP-S aOppenheim, Alan V 0aSignals & Systems bDorling KindersleyaIndiac2006 aTechnologyvApplied PhysicsPhysicsxGeneral Stack