EN 60870-5-4:1993 Telecontrol Equipment and Systems Part 5: Transmission Protocols Section 4: Definition and Coding of Application Information Elements
European Committee for Electrotechnical Standardization(CENELEC)
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EN 60870-5-4:1993
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1993EN 60870-5-4:1993 Telecontrol Equipment and Systems Part 5: Transmission Protocols Section 4: Definition and Coding of Application Information Elements