Winkler, Bruce Conrad,2013-08-162013-08-161967http://hdl.handle.net/11244/2295vii, 99 leaves :Coumarins.Tobacco Analysis.Chemistry, Biochemistry.Glycosides.Quantitative analysis of coumarins by thin layer chromatography, related chromatographic studies, and the partial identification of scopoletin glycoside present in tobacco tissue culture /Thesis