D 6245 - 18
๐ Scientific
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The Engineer August 11-18, 1983: <a href="https://archive.org/search.php?query=sim_pubid%3A1202%20AND%20volume%3A257" rel="nofollow">Volume 257</a>, Issue 6646-6647.<br />Digitized from <a href="https://archive.org/details/sim_raw_scan_IA1518515-05/page/n2335" rel="nofollow">IA1518515-05</a>.<br />P