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- us army corps of engineers, rock island district213
- u.s. army corps of engineers, rock island district122
- department of the army, corps of engineers, rock island district40
- u.s. army engineer district, rock island30
- u.s. army engineer district, rock island, corps of engineers11
- u.s. army engineer research and development center (erdc)6
- department of the army, rock island district, corps of engineers5
- us army engineer district, rock island, corps of engineers4
- iowa institute of hydraulic research, university of iowa3