Subject
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Mistletoes
1
Moths
1
Ore grade
1
Panning
1
Pest management
3
Pests
4
Pines
1
Population
1
Public opinion
1
Recreation
1
Rocks
1
Samplng
1
Seismicity maps
1
Soil
1
Soil surveys
2
Spraying
2
Spruce
1
Spruce budworm
4
Statistics
1
Synclines
1
Tectonic maps
1
Topography
1
Trapping
1
Turtles
1
Utilization
1
Watersheds
1
Wilderness areas
8