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- Library of Congress Subject Areas (1)
- 23rd Dewey Decimal Classification (1)
- 600 – Teknologi (Ilmu Terapan) (1)
- 690 - Pembangunan gedung (1)
- 600 – Teknologi (Ilmu Terapan) (1)
- 23rd Dewey Decimal Classification (1)
Number of items at this level: 0.