div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=the-chemical-age-year-book-diary-and-directory-1927htmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: The Chemical Age Year Book Diary and Directory 1927 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentsusreader031viewer2022020522575067c21a28ab0f07ad0307html5thumbnails1jpg width=140 height=200 divp© 1927 Nature Publishing Grouppdiv