DIN ISO 20121:2013-04 Event sustainability management systems - Requirements with guidance for use (ISO 20121:2012)

标准编号：DIN ISO 20121:2013-04

英文标题：Event sustainability management systems - Requirements with guidance for use (ISO 20121:2012)

德文标题：Nachhaltiges Veranstaltungsmanagement - Anforderungen mit Anleitung zur Anwendung (ISO 20121:2012)

发布日期：2013-04

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