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- Dewey Decimal Classification (DDC) (9)
- 500 Natural sciences and mathematics (9)
- 577 Ecology (9)
- 577.7 Marine ecology (9)
- 577.78 Nearshore ecology (9)
- 577.7 Marine ecology (9)
- 577 Ecology (9)
- 500 Natural sciences and mathematics (9)
Number of items at this level: 0.