ISO

General reference

• w:ISO 639 2 and 3 digit language codes
• ISO 3166-1 COUNTRY CODES and Names + freely available from UN/LOCODE site
• ISO 3166-2 Country Subdivision codes. Full copy costs 194 CZF. Incomplete snipplets available at the UN/LOCODE-site.
• ISO 4217 is an international standard describing three letter codes to define the names of currencies established by the International Organization for Standardization, ISO.

Financial reference

• w:ISO 6166 Securities and related financial instruments -- International securities identification numbering system (ISIN) The implementation process of this standard is slowly on the way.

Environmental reference

• w:ISO 14000 or ISO 14000 - family of international environment related standards for Environmental management, Environmental labels (self-declared and audited), Lifecycle assesment etc.

Social responsibility guidelines

• w:ISO 26000 guidelines for social responsibility for any sized business. Released in 2010.

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Some of these might be used as (normative) reference

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See also:

• w:List of ISO standards for a fairly complete index
• ISO homepage for the rest