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Reconnaissance Investigations of Ancient Gold Mines in the Southern Part...
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The Mineral Resource Potential of the Harrat Nawasif, Sheet 21/42 C, Ran...
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Phosphate Deposits in the Jawf-Sakakah Basin, Kingdom of Saudi Arabia, P...
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Exploration and Evaluation of the Hajrah-Hamdah Group of Ancient Gold Mines, Kingdom of Saudi Arabia : Usgs Open-File Report 81-445

Bok av A. M. Helaby A M Helaby Ronald G. Worl