D 6662 - 17
๐ Scientific
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The Engineer December 01-08, 1983: <a href="https://archive.org/search.php?query=sim_pubid%3A1202%20AND%20volume%3A257" rel="nofollow">Volume 257</a>, Issue 6662-6663.<br />Digitized from <a href="https://archive.org/details/sim_raw_scan_IA1518515-05/page/n2415" rel="nofollow">IA1518515-05</a>.<br /