div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader030vdocumentssitereader030viewer2022020405575067ef1a28ab0f07add4afhtml5page1jpg target=_blank img data-url=proceedings-of-the-tenth-international-congress-of-chemistryhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Proceedings of the Tenth International Congress of Chemistry loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentssitereader030viewer2022020405575067ef1a28ab0f07add4afhtml5thumbnails1jpg width=140 height=200 adivp© 1947 Nature Publishing Grouppdiv