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This item features the Standard materials needed for a student to take the Decompression Procedures certification course online.
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This item features the Standard materials needed for a student to take the Nitrox certification course online.
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The Advanced Gas Blending is the text-book literary assistant to the TDI Advanced Gas Blending certification course.
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The Advanced Nitrox Manual is the text-book literary assistant to the TDI Advanced Nitrox certification course.
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The Advanced Trimix Manual is the text-book literary assistant to the TDI Advanced Trimix certification course.
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