Subject
Appropriations and expenditures
1,077
Auditing
1,053
Evaluation
814
Rules and practice
771
Water quality
525
Management
485
Manufacturing industries
472
Emergency management
434
Water quality management
414
National security
333
Water-supply
299
Wildlife management
296
Water Pollution
295
Groundwater
293
Officials and employees
286
Criminal justice, Administration of
262
United States Foreign relations
262
Geology
260
History
244
Wildlife refuges
229
Wildlife conservation
227
Groundwater Quality
207
Medicaid
206
Stream measurements
206
Mines and mineral resources
204
Groundwater Pollution
199
Floods
197
Consumer protection
189
Planning
187
Educational tests and measurements
182
Procurement
175
Taxation Law and legislation
175
Air Pollution
174
Water resources development
173
Income tax
169
Environmental impact analysis
167
Renewable energy sources
164
Hydrogeology
159
Medicare
159
Streamflow
156
Hazardous waste site remediation
155
United States
154
Sales tax
153
Transportation Planning
152
Climatic changes
150
Terrorism Prevention
150
Income tax Law and legislation
149
Taxation
145
Forest management
143
Academic achievement
142
more ...