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There is a clear recommendation against using colors specified in ISO 3864, due to possible confusion with safety signage using those colors. Of explicit concern is green and white, due to the risk of confusing a green and white 'PI PF 030' direction arrow symbol, for an ISO 7010 evacuation route arrow. [2]
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In August 2003, Project Gutenberg created a CD containing approximately 600 of the "best" e-books from the collection. The CD is available for download as an ISO image. When users are unable to download the CD, they can request to have a copy sent to them, free of charge. In December 2003, a DVD was created containing nearly 10,000 items. At ...
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A History of Pi (book) Indiana Pi Bill; Leibniz formula for pi; Lindemann–Weierstrass theorem (Proof that π is transcendental) List of circle topics; List of formulae involving π; Liu Hui's π algorithm; Mathematical constant (sorted by continued fraction representation) Mathematical constants and functions; Method of exhaustion; Milü; Pi ...
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ISO 7010 is an International Organization for Standardization technical standard for graphical hazard symbols on hazard and safety signs, including those indicating emergency exits.