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Akan, J. , Jafiya, L. , Chellube, Z. , Mohammed, Z. , Abdulrahman, F.. "Determination of Some Organochlorine Pesticide Residues in Vegetable and Soil Samples from Alau Dam and Gongulong Agricultural Sites, Borno State, North Eastern Nigeria". World Academy of Science, Engineering and Technology, Open Science Index 88, International Journal of Environmental and Ecological Engineering, (2014), 8(4), 325 - 332.