;Kandasamy, Jayakrishna (VIT University Vellore),Muduli, Kamalakanta (Papua New Guinea University of Technology),Kommula, V. P. (University of Botswana, Gaborone),Meena, Purushottam L. (New York Insti
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T.R.K. (Emeritus Scientist Chetty CSIR-National Geophysical Research Institute Hyderabad India),Wilbert (Department of Geology Kehelpannala University of Botswana Gaborone Botswana)
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