div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: British Association: More Support Wanted src=https:reader031vdocumentsnetreader031viewer20220204055750683b1a28ab0f07af36edhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divp© Nature Publishing Group1968pdiv