Beets, C. (1983c) Preangerian (Miocene) Mollusca from the lower Sangkulirang Marl Formation, Kari Orang, Kalimantan (East Borneo). Scripta Geologica, 67, 49–67.
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Beets, C.
1983
Preangerian (Miocene) Mollusca from the lower Sangkulirang Marl Formation
Kari Orang, Kalimantan (East Borneo). Scripta Geologica