DIN ISO 21502:2021-12 Project, programme and portfolio management - Guidance on project management (ISO 21502:2020); Text in German and English / Note: Date of issue 2021-10-29
2021DIN ISO 21502:2021-12 Project, programme and portfolio management - Guidance on project management (ISO 21502:2020); Text in German and English / Note: Date of issue 2021-10-29