A Brief mineral investigation was carried out in the Tinjoan area, Sumatra Utara. This took the form of a drainage basin survey which was conducted at a time when the main target area (the Hatapang Granite( was being investigated by the project. No significant mineralisation was seen in the field or is indicated by the drainage basin survey
Edisi
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ISBN/ISSN
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Deskripsi Fisik
13 Halaman, lampiran peta, tidak berwarna, cover b