Dac diem phan bo cua sa khoang inmenit trong cat ven bien tu Thuan An den Tu Hien (Thua thien Hue)(The distribution's characteristics of Ilmenit placer in coastal sands from ThuanAn to Tu Hien (Hue)
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Dac diem phan bo cua sa khoang inmenit trong cat ven bien tu Thuan An den Tu Hien (Thua thien Hue)(The distribution's characteristics of Ilmenit placer in coastal sands from ThuanAn to Tu Hien (Hue)