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- Dewey Decimal Classification (DDC) (4)
- 600 Technology (Applied sciences) (4)
- 681 Precision instruments and other devices (4)
- 681.7 Other scientific and technological instruments, machinery, equipment (4)
- 681.76 Technological equipment (4)
- 681.763 Agricultural and related equipment (4)
- 681.76 Technological equipment (4)
- 681.7 Other scientific and technological instruments, machinery, equipment (4)
- 681 Precision instruments and other devices (4)
- 600 Technology (Applied sciences) (4)
Number of items at this level: 0.