Ruiz, Ru, Rufous-backed Negrito, Ru ware of Song Dynasty, Ruditapes philippinatum, Ruxianzengsheng Granula, Rudolf Alfred Bosshardt, ruling tool for grating, Rufous-backed Sparrow, Ruili-Longling faults, Rufous-naped Greenlet, Rufescent Tiger-heron 返回 rupia