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Reference.org
National Adhering Organizations
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<p>National Adhering Organizations (NAO) in chemistry are the organizations that work as the authoritative power over <a href="/facts/Chemistry/SrNqkGVm">chemistry</a> in an individual country. Their importance can be seen by their involvement in <a href="/facts/IUPAC/2AV6myCK">IUPAC</a>. Currently, 57 IUPAC National Adhering Organizations exist. </p>