1. Symptoms of ventilatory functions and environmental exposures in Portland cement workers;Abron;Br J Ind Med,1988
2. Akahara CO. A study of the respiratory disorders of cement factory workers at Nkalagu, Enugu State. FMCPH thesis, 1994.
3. Ventilating functions of workers at Okpelle cement factory in Nigeria;Alakija;West Afr J Med,1990
4. Determination of creatinine;Bousnes;J Biol Chem,1945
5. Conney AH, 1967. Enzyme induction by environmental agents. In: Davis M, editor. Proceedings of the Royal Society of Medicine 1974;67:642.