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• 522- History of science and technology
  • 522-75 Physical sciences and techniques
    • 522-135 Electromagnetism; electronics; electrotechnology
      • 522-139 Electrotechnology
        • 522-142 Telephone. Phone

Title

• fr : Téléphone.
• en : Telephone. Phone

SKOS Notation

522-142

In the plan

Francis Classification Scheme