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| Ash tree treatment (1) |
| Benefits of urban trees (1) |
| Ecological and economic value (urban trees) (1) |
| Emerald ash borer (1) |
| Urban forest management (1) |
| Urban forestry (1) |
| Ash tree treatment (1) |
| Benefits of urban trees (1) |
| Ecological and economic value (urban trees) (1) |
| Emerald ash borer (1) |
| Urban forest management (1) |
| Urban forestry (1) |