Subjects: WATER power; HYDROELECTRIC power plantsYUKONVENTURES LLC...
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Subjects: WATER powerSAINT Lawrence SeawayAIKEN, George D. (George David), 1892-1984
Subjects: WATER power; POWER resources; ELECTRIC linesCHURCHILL River (Sask. & Man.); SASKATCHEWAN; MASSACHUSETTSCHURCHILL, Winston, Sir, 1874-1965
Subjects: WATER powerDIEFENBAKER, John G., 1895-1979; ROCKEFELLER, Nelson A., 1908-1979; MASEFIELD, John, 1878-1967