Encyclopaedia of ecology, environment and pollution control.Vol18, Fossil fuel and the environment - R. Swarup; S.N. Mishra V.P. Jauhari (New Delhi Mittal Publications, 1992)
R. Swarup; S.N. Mishra & V.P. Jauhari: Encyclopaedia of ecology, environment and pollution control.Vol18, Fossil fuel and the environment. New Delhi. Mittal Publications, 1992. 81-7099-378-4--(3637303SWA)
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