Rao. M N. & Rao H V N. (1989). Air pollution. Tata McGraw-Hill.
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Dyfyniad Arddull Chicago
Rao. M N. and Rao H V N. Air Pollution. New Delhi: Tata McGraw-Hill, 1989.
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Dyfyniad MLA
Rao. M N. and Rao H V N. Air Pollution. Tata McGraw-Hill, 1989.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.