Items where Subject is "644 Household utilities"

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Dewey Decimal Classification (DDC) (2)
- 600 Technology (Applied sciences) (2)
  - 644 Household utilities (2)
    - 644.1 Heating (1)
    - 644.5 Ventilation and air conditioning (2)

Number of items at this level: 0.

This list was generated on Tue Jun 24 04:16:13 2025 WIB.