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Dyfyniad Arddull ChicagoRamesh, R., and Ramachandran. Fresh Water Management. New Delhi: Capital publishing company, 2005.
Dyfyniad MLARamesh, R., and Ramachandran. Fresh Water Management. Capital publishing company, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.