By Admin In IEC 2022-05-04 0 IEC 61534-21 Amd. 1 Ed. 2.0 b:2021 Click here to purchase Product Details Edition: 2.0 Published: 07/01/2021 ISBN(s): 9782832299555 Number of Pages: 12 File Size: 1 file , 870 KB Note: This product is unavailable in Belarus, Russia, Ukraine