div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: digitallibraryuntedu67531metadc674098m21high_res_dacree_0258pdfhexane and methanol from the test tube walls and it was difficult to measure accurately the fluorescence emis- src=https:reader030vdocumentinreader030viewer20220409185e936262082ddd5c1d420044html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: digitallibraryuntedu67531metadc674098m21high_res_dacree_0258pdfhexane and methanol from the test tube walls and it was difficult to measure accurately the fluorescence emis- src=https:reader030vdocumentinreader030viewer20220409185e936262082ddd5c1d420044html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: digitallibraryuntedu67531metadc674098m21high_res_dacree_0258pdfhexane and methanol from the test tube walls and it was difficult to measure accurately the fluorescence emis- src=https:reader030vdocumentinreader030viewer20220409185e936262082ddd5c1d420044html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: digitallibraryuntedu67531metadc674098m21high_res_dacree_0258pdfhexane and methanol from the test tube walls and it was difficult to measure accurately the fluorescence emis- src=https:reader030vdocumentinreader030viewer20220409185e936262082ddd5c1d420044html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 5button div class=ts-image amp-img class=ts-thumb alt=Page 5: digitallibraryuntedu67531metadc674098m21high_res_dacree_0258pdfhexane and methanol from the test tube walls and it was difficult to measure accurately the fluorescence emis- src=https:reader030vdocumentinreader030viewer20220409185e936262082ddd5c1d420044html5thumbnails5jpg width=142 height=106 layout=responsive amp-img divdiv