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Dyfyniad Arddull ChicagoNarayana Rao B. V. Physics: Second Year B.Sc. 3rd. New Delhi: New Age, 1998.
Dyfyniad MLANarayana Rao B. V. Physics: Second Year B.Sc. 3rd. New Age, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.