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Year : 2012 | Volume: 37 | Issue Number: 1 | Page: 54-60 TECHNICAL NOTESpecific activities of natural rocks and soils at quaternary intraplate volcanism north of Sana'a, Yemen Harb Shaban, El-Kamel Abd El-Hadi, Abbady Abd El-Bast, Saleh Imran Issa, Abd El-Mageed Abdallah Ibrahim
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