1. M. Ibrahim:
Institute of Soil & Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
2. Anwar-Ul-Hassan:
Department of Environmental Sciences, Government College University, Faisalabad, Pakistan
3. M. Arshad:
Department of Environmental Sciences, Government College University, Faisalabad, Pakistan
4. A. Tanveer:
Department of Agronomy, University of Agriculture, Faisalabad, Pakistan