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ACUC American Canadian Underwater Certifications, Inc.
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ANDI American Nitrox Divers International
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BSAC British Sub Aqua Club
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DRI Dive Rescue International
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GUE global underwater explorers
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Het Duikhuis
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IADS International Association of Diving Schools
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IANTD International Association of Nitrox and Technical Divers
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IDD Instructor Dive Development
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NAUI National Association of Underwater Instructors
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NELOS Nederlandstalige Liga voor Onderwateronderzoek en Sport
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PADI Professional Association of Diving Instructors
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PDIC Professional Diving Instructors Corporation
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SAA Sub - Aqua Association
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SSI Scuba Schools International