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Browsing by Author Helmi, K.A. Feryono
Showing results 1 to 1 of 1
| Issue Date | Title | Author(s) |
|---|---|---|
| 1990 | Analisis biaya dan manfaat reklamasi tanah bekas tambang semprot di unit penambangan timah Belitung | Mashar, Chamim; Husin, Yahya A.; Helmi, K.A. Feryono |