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Ma, Q.-H. (1991). Some Early Cretaceous unionids from Ningxia and Inner Mongolia. Acta Palaeontologica Sinica. 30(6): 705-713.
Ma, Q.-H. (1991). Some Early Cretaceous unionids from Ningxia and Inner Mongolia. Acta Palaeontologica Sinica. 30(6): 705-713.