Boomgaart, L. & J. Vroman. (1936). Smaller Foraminifera from the Marl Zone between Sonde and Modjokerto (Java). Proc. K. Akad. Wet. Amsterdam. 39: 419-425.
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Boomgaart, L. & J. Vroman
1936
Smaller Foraminifera from the Marl Zone between Sonde and Modjokerto (Java).