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5. Harlu Late 1920's. Leppäkoski. Paper mill 154.05 Kb, 630×405 Tags… Factories [691] Leppäkoski [346] 6. Harlu 1920's. Leppäkoski hydroelectric power plant 532.96 Kb, 1416×900 Tags… Hydroelectric power plants [858] Leppäkoski [346] Leppäkoski hydroelectric power plant [195] 7. Harlu 1920's. Leppäkoski hydroelectric power plant 107.23 Kb, 640×409 Tags… Hydroelectric power plants [858] Leppäkoski [346] Leppäkoski hydroelectric power plant [195] 8. Harlu 1920's. Leppäkoski hydroelectric power plant 625.71 Kb, 1401×900 Tags… Hydroelectric power plants [858] Leppäkoski [346] Leppäkoski hydroelectric power plant [195]