Foraminifera source request

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Sheng, J. C. (1958). 青海省茅口灰岩中的蜓科 - Some Fusulinids from the Maokou Limestone of Chinghai Province, Northwestern China. 古生物学报 - Acta Palaeontologica Sinica. 6(3): 12-36+72-78.