D 5855 - D 5855M - 20
๐ Scientific
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The Engineer December 20-27, 1968: <a href="https://archive.org/search.php?query=sim_pubid%3A1202%20AND%20volume%3A226" rel="nofollow">Volume 226</a>, Issue 5891-5892.<br />Digitized from <a href="https://archive.org/details/sim_raw_scan_IA1518514-01/page/n897" rel="nofollow">IA1518514-01</a>.<br />