From the 6th of october to the 27th of december fisldworks were done by writer of this report in the tertiary strip between. S. Belajan (S. Tabang) and S. Telen; additional reconnsissances west of the S. Belajan between S. Ritan and S. Bengen, right tributariss of the S. Belajan.
Edisi
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ISBN/ISSN
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Deskripsi Fisik
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