DIN EN IEC 61158-4-2 : 2020 Title: Industrial communication Networks - Fieldbus specifications - Part 4-2: Data-link layer protocol specification - Type 2 elements (IEC 61158-4-2:2019); English version EN IEC 61158-4-2:2019, only on CD-ROM Year: 2020 Publisher: DIN Media GmbH Availability: Within 1-2 working days