Freire, Sylvio de Campos.
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creatorOf | Pollard, Willard Averell. A project for the hydroelectric development of the Delaware River, one mile above Easton, Pennsylvania / by Willard Averell Pollard, Jr. and Sylvio de Campos Freire. | Lafayette College |
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associatedWith | Pollard, Willard Averell. | person |
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