D 4544 - 12
๐ Scientific
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The Engineer August 27-September 03, 1981: <a href="https://archive.org/search.php?query=sim_pubid%3A1202%20AND%20volume%3A253" rel="nofollow">Volume 253</a>, Issue 6544-6545.<br />Digitized from <a href="https://archive.org/details/sim_raw_scan_IA1518515-05/page/n1787" rel="nofollow">IA1518515-05</