ADR pictogram 2.2-Non-toxic and non-flammable gases

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Official ADR pictogram (formally, the European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR)) is a 1957 United Nations treaty that governs transnational transport of hazardous materials.

Author: United Nations Economic Commision for Europe
License: Public Domain according to Wikipedia
Source: https://en.wikipedia.org/wiki/ADR_(treaty)
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