DIN EN 61158-4-1 : 2015 Title: Industrial communication networks - Fieldbus specifications - Part 4-1: Data-link layer protocol specification - Type 1 elements (IEC 61158-4-1:2014); English version EN 61158-4-1:2014, only on CD-ROM Year: 2015 Publisher: DIN Media GmbH Availability: Within 1-2 working days