Subject
History
21
Cryptography History
10
Defense contracts
10
Military research
9
World War, 1939-1945 Cryptography
9
United States Armed Forces Procurement
8
Environmental policy
7
United States Foreign relations
7
World War, 1939-1945 Campaigns
7
Dredging
6
Procurement
6
Dredging spoil
5
Facilities
5
Management
5
National security
5
Negotiation
5
Officials and employees
5
Personnel management
5
World War, 1939-1945
5
Appropriations and expenditures
4
Dredging spoil Environmental aspects
4
Harbors Environmental aspects
4
Ice on rivers, lakes, etc
4
Locks (Hydraulic engineering)
4
Medicine, Military
4
Recruiting, enlistment, etc
4
Tactics
4
Technology transfer
4
Testing
4
World War, 1939-1945 Naval operations, American
4
Aeronautics, Military Research
3
Air conditioning
3
Air conditioning Control
3
Arab-Israeli conflict
3
Computer networks Security measures
3
Conflict management
3
Control
3
Dispute resolution (Law)
3
Droughts
3
Flood damage
3
Harbors
3
Heating Control
3
Heating and ventilation
3
Military planning
3
Multiple criteria decision making
3
Planning
3
Small business Technological innovations
3
Soviet Union Foreign relations
3
Technological innovations
3
Water resources development
3
more ...