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- Environmental policy in literature (11)
- Ecology in literature (10)
- Environmental protection in literature (9)
- Nature in literature (9)
- American literature--History and criticism (6)
- Landscape in literature (5)
- Nature conservation in literature (4)
- Environmental literature--History and criticism (3)
- American literature--History and criticism--Theory, etc (2)
- Criticism--English-speaking countries (2)
- English literature--History and criticism (2)
- English literature--History and criticism--Theory, etc (2)
- Wilderness areas in literature (2)
- American literature--Indian authors--History and criticism (1)
- Ecocriticism (1)
- Environmental literature--United States--History and criticism (1)
- Environmental policy--Great Britain--History--19th century (1)
- Environmentalism--United States--History (1)
- German literature--20th century--History and criticism (1)
- Indians in literature (1)
- Natural history literature--United States--History (1)
- Pastoral poetry, English--History and criticism (1)
- Romanticism--England (1)
- Science in literature (1)
- Self in literature (1)
- Technology in literature (1)
- Wordsworth, William, 1770-1850--Knowledge--Natural history (1)
- Wordsworth, William, 1770-1850--Political and social views (1)