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Keywords
- Medical informatics1
- Meteorology1
- Minerals1
- Oceanography1
- Periodicals1
- Petroleum -- Geology1
- Physics1
- Plastic tableware1
- Plastics in packaging1
- Plate tectonics1
- Refuse and refuse disposal1
- Rock mechanics1
- Science1
- Smog1
- Social problems1
- Social sciences1
- Sustainable development1
- Technology1
- Uralic languages1
- Urban pollution1