๐ Library
๐
December 1
๐ Polygon Media Ltd.
๐ English
Chemical Age December 12-19, 1980: <a href="https://archive.org/search.php?query=sim_pubid%3A926%20AND%20volume%3A121" rel="nofollow">Volume 121</a>, Issue 3194-3195.<br />Digitized from <a href="https://archive.org/details/sim_raw_scan_IA1574609-07/page/n941" rel="nofollow">IA1574609-07</a>.<br />P