Subject
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Machine learning
1,389
Budget
1,374
Water resources development
1,369
Computer networks Security measures
1,360
Indians of North America
1,351
Engineering
1,348
Sociology
1,318
Groundwater Pollution
1,317
Terrorism Prevention
1,298
Groundwater Quality
1,255
Water quality management
1,252
Human rights
1,235
Land titles Registration and transfer
1,231
Psychology
1,227
National parks and reserves
1,212
Human-computer interaction
1,210
Personnel management
1,207
Public lands
1,207
Groundwater flow
1,199
Communication
1,189
Energy policy
1,189
Renewable energy sources
1,188
Medical care
1,187
Uranium ores
1,182
Procurement
1,178
Floods
1,172
Geology, Structural
1,144
World War, 1939-1945
1,139
Frontier and pioneer life
1,129
Economic development
1,125
Land use, Rural
1,110
Air Pollution
1,106
World politics
1,096
Criminal justice, Administration of
1,087
Conservation of natural resources
1,081
Public health
1,072
Computational intelligence
1,063
Score
1,055
Database management
1,049
Streamflow
1,047
Outdoor recreation
1,040
Planning
1,039
Democracy
1,031
Economic assistance, American
1,004
Mathematical analysis
991
Economic sanctions, American
984
Language arts
983
Educational technology
982
Computer vision
981
Interpersonal relations
978
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