Topic
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921
2
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452
5
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488
4
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497
1