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Current results range from 1978 to 1981
- Report (United States. Forest Service. Northern Region. Insect and Disease Management)5
- Aspen -- Diseases and pests -- North Dakota -- Turtle Mountains1
- Bacillus thuringiensis -- North Dakota -- Bismarck Area1
- Canker-worms -- Control -- North Dakota -- Bismarck Area1
- Conifers -- Diseases and pests -- Idaho1
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