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Of History Of Stone Crushing In Ebonyi State

Crushing quarries in nigeria state by state,medicine, ebonyi state university, p.m.b. 053, abakaliki, nigeria 010 e-mail: email protected com received: mar 27, 2012 accepted: may 21, 2012 pulmonary problems among quarry workers of stone crushing industrial site at umuoghara, ebonyi state, nigeria AN nwib, EI ugwuj, NO nwambek, OF emelumad, LU ogbonnay abstract

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