Subject
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Machine learning
1,380
Water resources development
1,367
Budget
1,364
Computer networks Security measures
1,360
Indians of North America
1,345
Groundwater Pollution
1,317
Terrorism Prevention
1,295
Sociology
1,284
Engineering
1,265
Groundwater Quality
1,254
Water quality management
1,251
Land titles Registration and transfer
1,229
Human rights
1,223
National parks and reserves
1,210
Psychology
1,210
Human-computer interaction
1,209
Personnel management
1,201
Public lands
1,201
Groundwater flow
1,199
Energy policy
1,186
Renewable energy sources
1,183
Uranium ores
1,182
Procurement
1,175
Floods
1,172
Communication
1,170
Geology, Structural
1,143
World War, 1939-1945
1,137
Frontier and pioneer life
1,129
Medical care
1,127
Economic development
1,119
Land use, Rural
1,110
Air Pollution
1,108
World politics
1,094
Criminal justice, Administration of
1,082
Computational intelligence
1,075
Conservation of natural resources
1,075
Score
1,057
Streamflow
1,047
Database management
1,041
Outdoor recreation
1,039
Planning
1,035
Democracy
1,024
Economic assistance, American
1,000
Public health
996
Mathematical analysis
988
Computer vision
983
Educational technology
979
Economic sanctions, American
977
Data encryption (Computer science)
976
Interpersonal relations
973
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