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==External links==
==External links==
[www.boldandgoldmedia.com/Docs/B_G_Exfiltration%20Trench.pdf Application in an [[exfiltration trench]]]
Application in an [[exfiltration trench]]:[www.boldandgoldmedia.com/Docs/B_G_Exfiltration%20Trench.pdf]
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