Gupta, O. P. (2016). Elements of environmental pollution control. Khanna Book Publishing Co.
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Dyfyniad Arddull Chicago
Gupta, Om Prakash. Elements of Environmental Pollution Control. New Delhi: Khanna Book Publishing Co, 2016.
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Dyfyniad MLA
Gupta, Om Prakash. Elements of Environmental Pollution Control. Khanna Book Publishing Co, 2016.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.