div class=trans-pagebuttonPage 1button div class=trans-image a href=https:reader043fdocumentsinreader043viewer20220310105b938d9c09d3f206218dae0ehtml5page1jpg target=_blank amp-img class=trans-thumb alt=Page 1: coreacuk · Astonishingly almost the whole water surface of the dead arm was covered by duckweed Lemna minor and Spirodela polyrrhiza Only a few square src=https:reader043fdocumentsinreader043viewer20220310105b938d9c09d3f206218dae0ehtml5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 2button div class=trans-image a href=https:reader043fdocumentsinreader043viewer20220310105b938d9c09d3f206218dae0ehtml5page2jpg target=_blank amp-img class=trans-thumb alt=Page 2: coreacuk · Astonishingly almost the whole water surface of the dead arm was covered by duckweed Lemna minor and Spirodela polyrrhiza Only a few square src=https:reader043fdocumentsinreader043viewer20220310105b938d9c09d3f206218dae0ehtml5thumbnails2jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 3button div class=trans-image a href=https:reader043fdocumentsinreader043viewer20220310105b938d9c09d3f206218dae0ehtml5page3jpg target=_blank amp-img class=trans-thumb alt=Page 3: coreacuk · Astonishingly almost the whole water surface of the dead arm was covered by duckweed Lemna minor and Spirodela polyrrhiza Only a few square src=https:reader043fdocumentsinreader043viewer20220310105b938d9c09d3f206218dae0ehtml5thumbnails3jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 4button div class=trans-image a href=https:reader043fdocumentsinreader043viewer20220310105b938d9c09d3f206218dae0ehtml5page4jpg target=_blank amp-img class=trans-thumb alt=Page 4: coreacuk · Astonishingly almost the whole water surface of the dead arm was covered by duckweed Lemna minor and Spirodela polyrrhiza Only a few square...