(United States)Donald E.LaCourse;by (United States)Alfred E.Friedl; by (United States)Donald E.Pienkos;by (United States)Audrey Haber; (United States)Ronald J.Berger;by (United States)Larry D.Kirkpatrick; (United States)D.N.Lapedes;by (United States)N.Eldredge; (United States)Dean F.W.;by (United States)Mary M.; (United States)Paul E.;by (United States)Mary M.; (United States)Tom Forester;by (United States)Jeffrey Katzer; (United States)Tracy Moncure;by (United States)David Graf; (United States)National safety council;by (United States)Donald E.Pienkos; (United States)R.A.Olson...et al;by (United States)James E.Huheey;