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• 522- History of science and technology
  • 522-336 Life sciences
    • 522-359 Biology
      • 522-420 Medicine; surgery; pharmacy
        • 522-509 Therapeutics
          • 522-510 Pharmacy
            • 522-520A 21th century.

Title

• en : 21th century.
• fr : XXIe siècle.

SKOS Notation

522-520A

In the plan

Francis Classification Scheme