Interglacial periods, Coniferous forests, Tundra ecology, Ecosystems, Analysis, Deciduous forests, TD169-171.8, Environmental pollution, TD172-193.5, GE1-350, Environmental sciences, Environmental protection
Usage, Tundra ecology, Global temperature changes, Paleogeography, Ice sheets, Analysis, Mediation, Holocene, Deciduous forests, TD169-171.8, Environmental pollution, TD172-193.5, GE1-350, Environmental sciences, Environmental protection
Environment, Earth Sciences, Dewey: 550, LCC: QH301