Ausi - scuba snorkel diving certification, FREE downloads « scuba-instructor
(Clicks: 220;website added: Nov 8, 2013, scuba-instructor)
AUSI FREE snorkel & scuba diving notes, FREE instructor crossovers for PADI, SSI, BSAC, YMCA instructors, GNG instructor insurance, in-depth diving text, FREE in depth information.>
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ausi.com.au