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- Forests and forestry -- Great Britain, 3 results
- Environmental protection -- Great Britain, 1 results
- Agriculture -- Great Britain, 1 results
- Land use -- Great Britain, 1 results
- Coal mines and mining -- Great Britain, 1 results
- Slate industry -- Wales, 1 results
- Forest conservation -- Great Britain., 1 results
- Forest ecology -- Great Britain., 1 results