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Gas well drilling - Environmental aspects - Montana |
Oil and gas leases - Environmental aspects - Powder River Basin (Wyo. and Mont.) |
Coalbed methane - Environmental aspects - Powder River Basin (Wyo. and Mont.) |
Oil and gas leases - Environmental aspects - Montana |
Oil well drilling - Environmental aspects - Montana |
Conservation of natural resources - Montana |
Land use - Montana - Planning |
Coalbed methane - Environmental aspects |
Conservation of natural resources |
Gas well drilling - Environmental aspects |
Land use - Planning |
Oil and gas leases - Environmental aspects |
Oil well drilling - Environmental aspects |
Montana |
United States Powder River Basin |