by Charles A. Perry
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Flood-frequency estimates for five gaged...
Significant floods in the United States ...
Estimates of flow duration, mean flow, a...
Effects of reservoirs on flood discharge...
A method of estimating flood volumes in ...
Estimates of median flows for streams on...
Laws, etc
Sixteenth census of the United States
The Boy Who Harnessed the Wind
Energy and U.S. Agriculture
Drinking water
Fifteenth census of the United States