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- Ecology in literature (11)
- Environmental protection in literature (11)
- Nature in literature (11)
- Wilderness areas in literature (11)
- Landscape in literature (8)
- Conservation of natural resources in literature (7)
- American literature--History and criticism (6)
- Philosophy of nature in literature (6)
- Outdoor life in literature (5)
- Ecocriticism (4)
- Forests and forestry in literature (4)
- American literature--History and criticism--Theory, etc (2)
- American literature--Indian authors--History and criticism (2)
- Criticism--Great Britain (2)
- Criticism--United States (2)
- English literature--History and criticism (2)
- English literature--History and criticism--Theory, etc (2)
- Environmental literature--History and criticism (2)
- Environmental literature--United States--History and criticism (2)
- Environmental policy in literature (2)
- Indians in literature (2)
- Children's literature, American--History and criticism (1)
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- Children--Books and reading--English-speaking countries (1)
- Ecocriticism--Great Britain (1)
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- Forests in literature (1)
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- Literature and science--United States--History (1)
- Self in literature (1)