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Subject
- Civil engineering90
- Cost36
- Rivers, creeks, streams, etc29
- Canals27
- Navigation improvements24
- Bridges21
- Bridge construction19
- Surveying19
- Harbors and ports17
- United States. War Dept. Engineer Dept17
- Hydrographic surveying15
- Federal receipts and expenditures13
- Financial statements13
- Construction12
- Dredging12
- Locks (Hydraulic engineering)11
- Lakes10
- Public works10
- Engineers9
- Government contractors9