Talk:Controlled source electro-magnetic

External links modified
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I have just modified one external link on Controlled source electro-magnetic. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
 * Added archive https://web.archive.org/web/20081204121833/http://www.otcnet.org/2006/tech_prog/sched/documents/otc180031.pdf to http://www.otcnet.org/2006/tech_prog/sched/documents/otc180031.pdf

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Cheers.— InternetArchiveBot  (Report bug) 17:27, 12 August 2017 (UTC)