µµ¼ Á¤º¸
³» ¶óÀ̺귯¸®
Google Play µµ¼
HYDROELECTRIC STATION, GATUN. VIEW FROM WEST SIDE SHOWING GATE HOUSE AND EAST END OF SPILLWAY DAM. JANUARY 29, 1915.
TRANSMISSION SYSTEM. GATUN SUBSTATION, LOOKING WEST. MARCH 16, 1915.
PLATE 19.