Subject
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Coastal ecosystem health
1
Coastal zone management
1
Community forestry
1
Community health aides
1
Competition Government policy
2
Conifers Diseases and pests
1
Conifers Preservation
1
Conservation of natural resources
1
Conservation of natural resources Law and legislation
8
Conservation plants
1
Continental shelf
1
Corals
2
Corn Diseases and pests Integrated control
1
Corn Organic farming
1
Corridors
2
Cost of operation
1
Crinoidea
2
Cropping systems
1
Crops and climate
1
Crustacea
1
Crystalline rocks
1
Cultural property
1
Cultural property Protection
2
Culverts Hydrodynamics Mathematical models
1
Cumacea
1
Dairy cattle Feeding and feeds
1
Dairy farms
2
Dairy laws
2
Dairy products industry Law and legislation
3
Dam retirement Mathematical models
1
Dead Religious aspects Christianity History of doctrines
1
Death Religious aspects Christianity History of doctrines
1
Defoliation
1
Delaware River (N.Y.-Del. and N.J.)
1
Dendroctonus
1
Diadromous fishes
1
Disaster relief
7
Disaster relief Law and legislation
3
Dogwoods Diseases and pests
1
Dried beans
1
Drift
2
Drinking water Contamination
3
Drought forecasting
1
Droughts
1
Drug dealers
1
Drug traffic Social aspects
1
Dwellings Heating and ventilation
1
Earthquakes
3
Echinodermata
3
Ecological surveys
1
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