Attah, L. E. and Biyana, M. . (2013) “GC-MS Determination of Pesticide Residues in Effluent Run-off, River and Adjacent Soil around a Floriculture Industry in Holetta Town, Ethiopia”, Journal of Science and Sustainable Development, 1(2), pp. 25-40. doi: 10.20372/au.jssd.1.2.2013.015.