00361nam a22001217a 4500008004100000020001800041082001300059100001800072245007300090260003000163300002100193650002500214220111b        xxu||||| |||| 00| 0 eng d  a9780736728805  a621.309210aSilver, Tony 10aWhat's the big idea? :bthe story of Thomas Edison/cby Tony Silver   aOhiobZaner-Blosercc2020  a16p.:bcol. ill.  aElectrical engineers