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• 522- History of science and technology
  • 522-75 Physical sciences and techniques
    • 522-93 Astronomy
      • 522-105 Techniques of investigation
        • 522-106 Instruments.
        • 522-107 Observatories
        • 522-108 Spectrum analysis
        • 522-109 Radio-astronomy; electro-astronomy

Title

• fr : Techniques d'investigation.
• en : Techniques of investigation

SKOS Notation

522-105

In the plan

Francis Classification Scheme