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• 522- History of science and technology
  • 522-171 Technology
    • 522-203 Building Techniques and Architecture, housing
      • 522-204 Building techniques and architecture
        • 522-205 History
          • 522-215 20th century

Título

• en : 20th century
• fr : XXe siècle.

Notación SKOS

522-215

En el plan

Francis Classification Scheme