The OXY HACKER is the Compleat & Unuathorized Sourcebook on the Use and Handling of Oxygen, nitrox and trimix. Our first book, Vance Harlow's OXYGEN HACKER'S COMPANION, is the book that blew the nitrox mixing game clear open, cutting through all the mystery and. Buy Oxygen Hacker's Companion on raymondsaumure.com ✓ FREE SHIPPING on qualified orders.
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