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1. Harlu Mid 1900's. Hämekoski hydroelectric power plant 897.31 Kb, 1361×900 © F.M.Andersen Tags… Hydroelectric power plants [858] Hämekoski [311] Hämekoski hydroelectric power plant [264] 2. Harlu Mid 1900's. Leppäkoski hydroelectric power plant 230.72 Kb, 658×495 Tags… Factories [691] Hydroelectric power plants [858] Leppäkoski [346] Leppäkoski hydroelectric power plant [195] 3. Harlu 1907. Läskelä factory 530.48 Kb, 1105×740 © August Lindgren Tags… Factories [691] Hydroelectric power plants [858] Läskelä [934] 4. Harlu Late 1900's. Hämekoski hydroelectric power plant 157.89 Kb, 596×374 © Carl Gröndah Tags… Hydroelectric power plants [858] Hämekoski [311] Hämekoski hydroelectric power plant [264]