Water safety signs and beach safety flags: 2. Specifications for beach safety flags - Colour, shape, meaning and performance
(2007). Water safety signs and beach safety flags: 2. Specifications for beach safety flags - Colour, shape, meaning and performance. First edition, review and confirmed in 2016. ISO Protocols, 2007(20712-2:2007). International Organization for Standardization (ISO): Geneva. 7 pp.
Part of: ISO Protocols. International Organization for Standardization (ISO): Geneva. , more
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