Brewer, Linda M.2009-03-232009-03-2319731973Source: Masters Abstracts International, Volume: 40-07, page: .http://hdl.handle.net/10393/7350http://dx.doi.org/10.20381/ruor-15290Biology, General.Effects of vitamin D3 on duodenal epithelium of chickens: An electron microscopic study.Thesis