div class=ts-pagebuttonPage 1button div class=ts-image a href=https:reader042vdocumentsmxreader042viewer2022020405575067971a28ab0f07ac3d17html5page1jpg target=_blank amp-img class=ts-thumb alt=Page 1: Porpoises in the Victoria Nyanza src=https:reader042vdocumentsmxreader042viewer2022020405575067971a28ab0f07ac3d17html5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divp©1891 Nature Publishing Grouppdiv