D 5184 - 22
๐ Scientific
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The Engineer August 22-29, 1974: <a href="https://archive.org/search.php?query=sim_pubid%3A1202%20AND%20volume%3A239" rel="nofollow">Volume 239</a>, Issue 6180-6181.<br />Digitized from <a href="https://archive.org/details/sim_raw_scan_IA1518514-07/page/n1122" rel="nofollow">IA1518514-07</a>.<br />P