cite this article as: nwibo an, ugwuja ei, nwambeke no, et al. pulmonary problems among quarry workers of stone crushing industrial site at umuoghara, ebonyi state, nigeria. the international journal of occupational and environmental medicine 2012; 85.
ano community, comprising three component villages, was formed over our transaction with crushed rock industries, simply because its establishment affected some pieces of land owned by every unit.
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