GOST PDF
Recreational diving services. Safety related minimum requirements for the training of scuba instruction. Part 1. Level 1
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Recreational diving services. Safety related minimum requirements for the training of scuba instruction. Part 2. Level 2
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Recreational diving services. Requirements for recreational scuba diving service providers
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Thermoplastics pipes and fittings. Vicat softening temperature. Part 1. General test method
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Ships and marine technology. Navigation. Daylight signaling lamps
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