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• 522- History of science and technology
  • 522-75 Physical sciences and techniques
    • 522-135 Electromagnetism; electronics; electrotechnology
      • 522-139 Electrotechnology
        • 522-140 General points
        • 522-141 Telegraph
        • 522-142 Telephone. Phone
        • 522-143 Radio
        • 522-144 Television

Title

• fr : Electrotechnique.
• en : Electrotechnology

SKOS Notation

522-139

In the plan

Francis Classification Scheme