2004: Discovery of pre-Ordovician strata in areas north of Hongshishan, Beishan Mountains, Gansu Province of China. Geological Bulletin of China, 23(11): 1160-1161.
    Citation: 2004: Discovery of pre-Ordovician strata in areas north of Hongshishan, Beishan Mountains, Gansu Province of China. Geological Bulletin of China, 23(11): 1160-1161.

    Discovery of pre-Ordovician strata in areas north of Hongshishan, Beishan Mountains, Gansu Province of China

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