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Author/Creator
- SpringerLink (Online service)874
- United States. Congress. House78
- United States57
- United States. War Dept57
- Infobase, film distributor53
- United States. Congress. Senate48
- American Society of Civil Engineers44
- United States. Army. Corps of Engineers36
- United States. War Dept. Engineer Dept36
- Institution of Civil Engineers (Great Britain)33
- Mahan, D. H. (Dennis Hart), 1802-187131
- ebrary, Inc31
- Films for the Humanities & Sciences (Firm)27
- Infobase27
- Trautwine, John C. (John Cresson), 1810-188324
- Adam Matthew Digital (Firm), digitiser21
- Rankine, William John Macquorn, 1820-187216
- BBC (Firm)13
- PBS (Firm)12
- Alam, M. Shahria11