Foraminifera source request

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Sun, H. (1990). 吉林延边地区二叠系大蒜沟组■类化石 - Permian fusulinids from the Dasuangou Formation in Yanbian County, Jilin. 微体古生物学报 - Acta Micropalaeontologica Sinica. 7: 257-264.