Singh, J. J., & Deepak, A. (1980). Environmental and climatic Impact of coal utilization. Academic Pr.
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Dyfyniad Arddull Chicago
Singh, Jag J., and Adarsh Deepak. Environmental and Climatic Impact of Coal Utilization. New York: Academic Pr, 1980.
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Dyfyniad MLA
Singh, Jag J., and Adarsh Deepak. Environmental and Climatic Impact of Coal Utilization. Academic Pr, 1980.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.