363.73 Pollution
363.738 Pollutants vi
363.73 Ô nhiễm
363.738 Chất ô nhiễm it
363.73 Inquinamento
363.738 Inquinanti en
363.73 Pollution
363.738 Pollutants
363.7382 Oil 363.7384 Toxic chemicals 363.7386 Acid rain 363.7387 Fumes, gases, smoke de
363.73 Umweltverschmutzung
363.738 Schadstoffe
363.7382 Öl 363.7384 Giftige Chemikalien 363.7386 Saurer Regen 363.7387 Abgase, Gase, Rauch
Dewey Decimal Classification
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