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Dyfyniad Arddull ChicagoDogra, S. K., and S. Dogra. Physical Chemistry Through Problems. New Delhi: Wiley Eastern, 1993.
Dyfyniad MLADogra, S. K., and S. Dogra. Physical Chemistry Through Problems. Wiley Eastern, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.