QC 250200-1985 Inductor and Transformer Cores for Telecommunications Part 3: Sectional Specification: Magnetic Oxide Cores for Broad-Band Transformers (IEC 723-3 ED 1) (English Version)
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QC 250200-1985
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1985QC 250200-1985 Inductor and Transformer Cores for Telecommunications Part 3: Sectional Specification: Magnetic Oxide Cores for Broad-Band Transformers (IEC 723-3 ED 1)