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Okoli, I.; Alaehie, D.; Akanno, E.; Okoli, C.; Opara, M.; Uchegbu, M.; Ogundu, U.; Iheukwumer, F. Concentrations of Aerial Pollutant Gases in Selected Poultry Pens in Imo State, Nigeria. Int. J. Poult. Sci. 2004, 3 (6), 427–431. https://doi.org/10.3923/ijps.2004.427.431.