div class=ts-pagebuttonPage 1button div class=ts-image a href=https:reader042vdokumennetreader042viewer202202010358aa9d1e1a28ab85678b6577html5page1jpg target=_blank amp-img class=ts-thumb alt=Page 1: Excel Formulas Certificate src=https:reader042vdokumennetreader042viewer202202010358aa9d1e1a28ab85678b6577html5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divpWilliam W Duncanp pExcel Formulas on December 9 2015p p100pdiv