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- Dewey Decimal Classification (DDC) (2)
- 600 Technology (Applied sciences) (2)
- 678 Elastomers and elastomer products (2)
- 678.2 Rubber (1)
- 678.5 Latexes (1)
- 678 Elastomers and elastomer products (2)
- 600 Technology (Applied sciences) (2)
Number of items at this level: 0.