Rao,C.S. (1991). Environmental pollution control engineering (2nd ed.). New age International.
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Dyfyniad Arddull Chicago
Rao,C.S. Environmental Pollution Control Engineering. 2nd ed. New Delhi: New age International, 1991.
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Dyfyniad MLA
Rao,C.S. Environmental Pollution Control Engineering. 2nd ed. New age International, 1991.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.