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2. Distribution of foraminiferal assemblages in the upper Eocene Batu Gading Limestone, Sarawak;Abdullah,1993
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4. On the age and foraminiferal fauna of the Bukit Sarang Limestone, Sarawak, Malaysia;Adams,1964
5. The foraminifera and stratigraphy of the Melinau Limestone, Sarawak, and its importance in Tertiary correlation;Adams;Quarterly Journal of the Geological Society, London,1965